{"transactions":[{"id":1109193,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, CAO & Treasurer"}}],"security":"Common Stock","published_at":"2025-06-17T20:15:57.000Z","date":"2025-06-14","kind":"grant","planned":false,"acquired":true,"shares":730,"price":6.511,"value":4753.03,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"These shares were acquired under the Newpark Resources, Inc. Amended and Restated Employee Stock Purchase Plan in transactions that were exempt under Rule 16b-3(c)."}],"balance_after":305245,"source":{"system":"sec-edgar","filing":"0000071829-25-000098","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182925000098/edgardoc.xml","form_type":"4"}},{"id":1126939,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, CAO & Treasurer"}}],"security":"Restricted Stock Units","published_at":"2025-06-03T22:22:08.000Z","date":"2025-06-01","kind":"exercise","planned":false,"acquired":false,"shares":14667,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Restricted stock units convert into common stock on a one-for-one basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Grant of restricted stock units that vest in one-third increments on June 1 of each subsequent year after grant and settle in shares."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Grant of restricted stock units that vest in one-third increments on June 1 of each subsequent year after grant and settle in shares."}],"balance_after":14666,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":14667},"source":{"system":"sec-edgar","filing":"0000071829-25-000093","document":"edgardoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182925000093/edgardoc.xml","form_type":"4"}},{"id":1126938,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, CAO & Treasurer"}}],"security":"Restricted Stock Units","published_at":"2025-06-03T22:22:08.000Z","date":"2025-06-01","kind":"exercise","planned":false,"acquired":false,"shares":17333,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Restricted stock units convert into common stock on a one-for-one basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Grant of restricted stock units that vest in one-third increments on June 1 of each subsequent year after grant and settle in shares."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Grant of restricted stock units that vest in one-third increments on June 1 of each subsequent year after grant and settle in shares."}],"balance_after":29333,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":17333},"source":{"system":"sec-edgar","filing":"0000071829-25-000093","document":"edgardoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182925000093/edgardoc.xml","form_type":"4"}},{"id":1126937,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, CAO & Treasurer"}}],"security":"Common Stock","published_at":"2025-06-03T22:22:08.000Z","date":"2025-06-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":5771,"price":8.09,"value":46687.39,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents shares withheld to satisfy tax withholding obligations upon the vesting of restricted stock units."}],"balance_after":304515,"source":{"system":"sec-edgar","filing":"0000071829-25-000093","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182925000093/edgardoc.xml","form_type":"4"}},{"id":1126936,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, CAO & Treasurer"}}],"security":"Common Stock","published_at":"2025-06-03T22:22:08.000Z","date":"2025-06-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":6820,"price":8.09,"value":55173.8,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents shares withheld to satisfy tax withholding obligations upon the vesting of restricted stock units."}],"balance_after":310286,"source":{"system":"sec-edgar","filing":"0000071829-25-000093","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182925000093/edgardoc.xml","form_type":"4"}},{"id":1126935,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, CAO & Treasurer"}}],"security":"Common Stock","published_at":"2025-06-03T22:22:08.000Z","date":"2025-06-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":3122,"price":8.09,"value":25256.98,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents shares withheld to satisfy tax withholding obligations upon the vesting of restricted stock units."}],"balance_after":317106,"source":{"system":"sec-edgar","filing":"0000071829-25-000093","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182925000093/edgardoc.xml","form_type":"4"}},{"id":1126934,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, CAO & Treasurer"}}],"security":"Common Stock","published_at":"2025-06-03T22:22:08.000Z","date":"2025-06-01","kind":"exercise","planned":false,"acquired":true,"shares":14667,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted stock units convert into common stock on a one-for-one basis."}],"balance_after":320228,"source":{"system":"sec-edgar","filing":"0000071829-25-000093","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182925000093/edgardoc.xml","form_type":"4"}},{"id":1126933,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, CAO & Treasurer"}}],"security":"Common Stock","published_at":"2025-06-03T22:22:08.000Z","date":"2025-06-01","kind":"exercise","planned":false,"acquired":true,"shares":17333,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted stock units convert into common stock on a one-for-one basis."}],"balance_after":305561,"source":{"system":"sec-edgar","filing":"0000071829-25-000093","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182925000093/edgardoc.xml","form_type":"4"}},{"id":1146668,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, CAO & Treasurer"}}],"security":"Common Stock","published_at":"2025-05-16T20:36:56.000Z","date":"2025-05-14","kind":"grant","planned":false,"acquired":true,"shares":29900,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Grant of restricted stock units that vest in one-third increments on June 1 of each subsequent year after grant and settle in shares."}],"balance_after":288228,"source":{"system":"sec-edgar","filing":"0000071829-25-000062","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182925000062/edgardoc.xml","form_type":"4"}},{"id":1330229,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, CAO & Treasurer"}}],"security":"Common Stock","published_at":"2024-12-17T21:49:54.000Z","date":"2024-12-13","kind":"grant","planned":false,"acquired":true,"shares":722,"price":6.579,"value":4750.038,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"These shares were acquired under the Newpark Resources, Inc. Amended and Restated Employee Stock Purchase Plan in transactions that were exempt under Rule 16b-3(c)."}],"balance_after":258328,"source":{"system":"sec-edgar","filing":"0000071829-24-000129","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182924000129/edgardoc.xml","form_type":"4"}},{"id":1478250,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, CAO & Treasurer"}}],"security":"Common Stock","published_at":"2024-06-17T21:46:41.000Z","date":"2024-06-14","kind":"grant","planned":false,"acquired":true,"shares":841,"price":5.984,"value":5032.544,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"These shares were acquired under the Newpark Resources, Inc. Amended and Restated Employee Stock Purchase Plan in transactions that were exempt under Rule 16b-3(c)."}],"balance_after":257606,"source":{"system":"sec-edgar","filing":"0000071829-24-000086","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182924000086/edgardoc.xml","form_type":"4"}},{"id":1494436,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, CAO & Treasurer"}}],"security":"Restricted Stock Units","published_at":"2024-06-04T22:32:55.000Z","date":"2024-06-01","kind":"exercise","planned":false,"acquired":false,"shares":14667,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Restricted stock units convert into common stock on a one-for-one basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each subsequent year after grant."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each subsequent year after grant."}],"balance_after":46666,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":14667},"source":{"system":"sec-edgar","filing":"0000071829-24-000080","document":"edgardoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182924000080/edgardoc.xml","form_type":"4"}},{"id":1494435,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, CAO & Treasurer"}}],"security":"Restricted Stock Units","published_at":"2024-06-04T22:32:55.000Z","date":"2024-06-01","kind":"exercise","planned":false,"acquired":false,"shares":17333,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Restricted stock units convert into common stock on a one-for-one basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each subsequent year after grant."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each subsequent year after grant."}],"balance_after":61333,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":17333},"source":{"system":"sec-edgar","filing":"0000071829-24-000080","document":"edgardoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182924000080/edgardoc.xml","form_type":"4"}},{"id":1494434,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, CAO & Treasurer"}}],"security":"Restricted Stock Units","published_at":"2024-06-04T22:32:55.000Z","date":"2024-06-01","kind":"exercise","planned":false,"acquired":false,"shares":18666,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Restricted stock units convert into common stock on a one-for-one basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each subsequent year after grant."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each subsequent year after grant."}],"balance_after":78666,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":18666},"source":{"system":"sec-edgar","filing":"0000071829-24-000080","document":"edgardoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182924000080/edgardoc.xml","form_type":"4"}},{"id":1494433,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, CAO & Treasurer"}}],"security":"Common Stock","published_at":"2024-06-04T22:32:55.000Z","date":"2024-06-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":4545,"price":8.48,"value":38541.6,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents shares withheld to satisfy tax withholding obligations upon the vesting of restricted stock units."}],"balance_after":256765,"source":{"system":"sec-edgar","filing":"0000071829-24-000080","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182924000080/edgardoc.xml","form_type":"4"}},{"id":1494432,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, CAO & Treasurer"}}],"security":"Common Stock","published_at":"2024-06-04T22:32:55.000Z","date":"2024-06-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":4220,"price":8.48,"value":35785.6,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents shares withheld to satisfy tax withholding obligations upon the vesting of restricted stock units."}],"balance_after":261310,"source":{"system":"sec-edgar","filing":"0000071829-24-000080","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182924000080/edgardoc.xml","form_type":"4"}},{"id":1494431,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, CAO & Treasurer"}}],"security":"Common Stock","published_at":"2024-06-04T22:32:55.000Z","date":"2024-06-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":3571,"price":8.48,"value":30282.08,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents shares withheld to satisfy tax withholding obligations upon the vesting of restricted stock units."}],"balance_after":265530,"source":{"system":"sec-edgar","filing":"0000071829-24-000080","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182924000080/edgardoc.xml","form_type":"4"}},{"id":1494430,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, CAO & Treasurer"}}],"security":"Common Stock","published_at":"2024-06-04T22:32:55.000Z","date":"2024-06-01","kind":"exercise","planned":false,"acquired":true,"shares":14667,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted stock units convert into common stock on a one-for-one basis."}],"balance_after":269101,"source":{"system":"sec-edgar","filing":"0000071829-24-000080","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182924000080/edgardoc.xml","form_type":"4"}},{"id":1494429,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, CAO & Treasurer"}}],"security":"Common Stock","published_at":"2024-06-04T22:32:55.000Z","date":"2024-06-01","kind":"exercise","planned":false,"acquired":true,"shares":17333,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted stock units convert into common stock on a one-for-one basis."}],"balance_after":254434,"source":{"system":"sec-edgar","filing":"0000071829-24-000080","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182924000080/edgardoc.xml","form_type":"4"}},{"id":1494428,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, CAO & Treasurer"}}],"security":"Common Stock","published_at":"2024-06-04T22:32:55.000Z","date":"2024-06-01","kind":"exercise","planned":false,"acquired":true,"shares":18666,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted stock units convert into common stock on a one-for-one basis."}],"balance_after":237101,"source":{"system":"sec-edgar","filing":"0000071829-24-000080","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182924000080/edgardoc.xml","form_type":"4"}},{"id":1513479,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, CAO & Treasurer"}}],"security":"Common Stock","published_at":"2024-05-17T21:22:00.000Z","date":"2024-05-15","kind":"grant","planned":false,"acquired":true,"shares":23800,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each subsequent year after grant."}],"balance_after":218435,"source":{"system":"sec-edgar","filing":"0000071829-24-000050","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182924000050/edgardoc.xml","form_type":"4"}},{"id":1710458,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, CAO & Treasurer"}}],"security":"Common Stock","published_at":"2023-12-15T21:41:00.000Z","date":"2023-12-14","kind":"grant","planned":false,"acquired":true,"shares":1203,"price":3.8165,"value":4591.2495,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"These shares were acquired under the Newpark Resources, Inc. Amended and Restated Employee Stock Purchase Plan in transactions that were exempt under Rule 16b-3(c)."}],"balance_after":194635,"source":{"system":"sec-edgar","filing":"0000071829-23-000153","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182923000153/edgardoc.xml","form_type":"4"}},{"id":1733961,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, CAO & Treasurer"}}],"security":"Restricted Stock Units","published_at":"2023-11-21T21:48:23.000Z","date":"2023-11-20","kind":"exercise","planned":false,"acquired":false,"shares":12500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Restricted stock units convert into common stock on a one-for-one basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Reflects the vesting of restricted stock units granted on November 20, 2019, which awards vest at a rate of 50% of the shares on November 20, 2021 and 50% of the shares on November 20, 2023"},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Reflects the vesting of restricted stock units granted on November 20, 2019, which awards vest at a rate of 50% of the shares on November 20, 2021 and 50% of the shares on November 20, 2023"}],"balance_after":97332,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":12500},"source":{"system":"sec-edgar","filing":"0000071829-23-000147","document":"edgardoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182923000147/edgardoc.xml","form_type":"4"}},{"id":1733960,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, CAO & Treasurer"}}],"security":"Common Stock","published_at":"2023-11-21T21:48:23.000Z","date":"2023-11-20","kind":"tax_withholding","planned":false,"acquired":false,"shares":3043,"price":7.19,"value":21879.17,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents shares withheld to satisfy tax withholding obligations upon the vesting of restricted stock units."}],"balance_after":193432,"source":{"system":"sec-edgar","filing":"0000071829-23-000147","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182923000147/edgardoc.xml","form_type":"4"}},{"id":1733959,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, CAO & Treasurer"}}],"security":"Common Stock","published_at":"2023-11-21T21:48:23.000Z","date":"2023-11-20","kind":"exercise","planned":false,"acquired":true,"shares":12500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted stock units convert into common stock on a one-for-one basis."}],"balance_after":196475,"source":{"system":"sec-edgar","filing":"0000071829-23-000147","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182923000147/edgardoc.xml","form_type":"4"}},{"id":1853662,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, CAO & Treasurer"}}],"security":"Common Stock","published_at":"2023-06-16T20:36:25.000Z","date":"2023-06-14","kind":"grant","planned":false,"acquired":true,"shares":1320,"price":3.3745,"value":4454.34,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"These shares were acquired under the Newpark Resources, Inc. Amended and Restated Employee Stock Purchase Plan in transactions that were exempt under both Rule 16-3(d) and Rule 16b-3(c)."}],"balance_after":183975,"source":{"system":"sec-edgar","filing":"0000071829-23-000109","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182923000109/edgardoc.xml","form_type":"4"}},{"id":1868721,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice President, CAO"}}],"security":"Restricted Stock Units","published_at":"2023-06-06T00:10:06.000Z","date":"2023-06-02","kind":"exercise","planned":false,"acquired":false,"shares":17333,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Restricted stock units convert into common stock on a one-for-one basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Reflects vesting of restricted stock units granted on May 21, 2020, May 20, 2021 and May 19, 2022, respectively, which awards vest in one-third increments on June 1 of each subsequent year following the date of grant."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"Reflects vesting of restricted stock units granted on May 21, 2020, May 20, 2021 and May 19, 2022, respectively, which awards vest in one-third increments on June 1 of each subsequent year following the date of grant."}],"balance_after":109832,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":17333},"source":{"system":"sec-edgar","filing":"0000071829-23-000103","document":"edgardoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182923000103/edgardoc.xml","form_type":"4"}},{"id":1868720,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice President, CAO"}}],"security":"Restricted Stock Units","published_at":"2023-06-06T00:10:06.000Z","date":"2023-06-01","kind":"exercise","planned":false,"acquired":false,"shares":17334,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Restricted stock units convert into common stock on a one-for-one basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Reflects vesting of restricted stock units granted on May 21, 2020, May 20, 2021 and May 19, 2022, respectively, which awards vest in one-third increments on June 1 of each subsequent year following the date of grant."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"Reflects vesting of restricted stock units granted on May 21, 2020, May 20, 2021 and May 19, 2022, respectively, which awards vest in one-third increments on June 1 of each subsequent year following the date of grant."}],"balance_after":127165,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":17334},"source":{"system":"sec-edgar","filing":"0000071829-23-000103","document":"edgardoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182923000103/edgardoc.xml","form_type":"4"}},{"id":1868719,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice President, CAO"}}],"security":"Restricted Stock Units","published_at":"2023-06-06T00:10:06.000Z","date":"2023-06-01","kind":"exercise","planned":false,"acquired":false,"shares":18667,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Restricted stock units convert into common stock on a one-for-one basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Reflects vesting of restricted stock units granted on May 21, 2020, May 20, 2021 and May 19, 2022, respectively, which awards vest in one-third increments on June 1 of each subsequent year following the date of grant."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"Reflects vesting of restricted stock units granted on May 21, 2020, May 20, 2021 and May 19, 2022, respectively, which awards vest in one-third increments on June 1 of each subsequent year following the date of grant."}],"balance_after":144499,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":18667},"source":{"system":"sec-edgar","filing":"0000071829-23-000103","document":"edgardoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182923000103/edgardoc.xml","form_type":"4"}},{"id":1868718,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice President, CAO"}}],"security":"Common Stock","published_at":"2023-06-06T00:10:06.000Z","date":"2023-06-02","kind":"exercise","planned":false,"acquired":true,"shares":17333,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted stock units convert into common stock on a one-for-one basis."}],"balance_after":182655,"source":{"system":"sec-edgar","filing":"0000071829-23-000103","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182923000103/edgardoc.xml","form_type":"4"}},{"id":1868717,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice President, CAO"}}],"security":"Common Stock","published_at":"2023-06-06T00:10:06.000Z","date":"2023-06-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":4220,"price":3.67,"value":15487.4,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents shares withheld to satisfy tax withholding obligations upon the vesting of restricted stock units."}],"balance_after":165322,"source":{"system":"sec-edgar","filing":"0000071829-23-000103","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182923000103/edgardoc.xml","form_type":"4"}},{"id":1868716,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice President, CAO"}}],"security":"Common Stock","published_at":"2023-06-06T00:10:06.000Z","date":"2023-06-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":4220,"price":3.67,"value":15487.4,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents shares withheld to satisfy tax withholding obligations upon the vesting of restricted stock units."}],"balance_after":169542,"source":{"system":"sec-edgar","filing":"0000071829-23-000103","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182923000103/edgardoc.xml","form_type":"4"}},{"id":1868715,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice President, CAO"}}],"security":"Common Stock","published_at":"2023-06-06T00:10:06.000Z","date":"2023-06-01","kind":"exercise","planned":false,"acquired":true,"shares":17334,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted stock units convert into common stock on a one-for-one basis."}],"balance_after":173762,"source":{"system":"sec-edgar","filing":"0000071829-23-000103","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182923000103/edgardoc.xml","form_type":"4"}},{"id":1868714,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice President, CAO"}}],"security":"Common Stock","published_at":"2023-06-06T00:10:06.000Z","date":"2023-06-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":4545,"price":3.67,"value":16680.15,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents shares withheld to satisfy tax withholding obligations upon the vesting of restricted stock units."}],"balance_after":156428,"source":{"system":"sec-edgar","filing":"0000071829-23-000103","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182923000103/edgardoc.xml","form_type":"4"}},{"id":1868713,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice President, CAO"}}],"security":"Common Stock","published_at":"2023-06-06T00:10:06.000Z","date":"2023-06-01","kind":"exercise","planned":false,"acquired":true,"shares":18667,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted stock units convert into common stock on a one-for-one basis."}],"balance_after":160973,"source":{"system":"sec-edgar","filing":"0000071829-23-000103","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182923000103/edgardoc.xml","form_type":"4"}},{"id":1883781,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice President, CAO"}}],"security":"Restricted Stock Units","published_at":"2023-05-22T23:31:40.000Z","date":"2023-05-18","kind":"grant","planned":false,"acquired":true,"shares":44000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each subsequent year after grant."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each subsequent year after grant."}],"balance_after":163166,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":44000},"source":{"system":"sec-edgar","filing":"0000071829-23-000075","document":"edgardoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182923000075/edgardoc.xml","form_type":"4"}},{"id":2084611,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice President, CAO"}}],"security":"Common Stock","published_at":"2022-12-16T22:46:13.000Z","date":"2022-12-14","kind":"grant","acquired":true,"shares":1367,"price":3.213,"value":4392.171,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"These shares were acquired under the Newpark Resources, Inc. Amended and Restated Employee Stock Purchase Plan in transactions that were exempt under both Rule 16-3(d) and Rule 16b-3(c)."}],"balance_after":142306,"source":{"system":"sec-edgar","filing":"0000071829-22-000198","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182922000198/edgardoc.xml","form_type":"4"}},{"id":2230953,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice President, CAO"}}],"security":"Common Stock","published_at":"2022-06-16T20:31:49.000Z","date":"2022-06-14","kind":"grant","acquired":true,"shares":1785,"price":2.397,"value":4278.645,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"These shares were acquired under the Newpark Resources, Inc. Amended and Restated Employee Stock Purchase Plan in transactions that were exempt under both Rule 16-3(d) and Rule 16b-3(c)."}],"balance_after":140939,"source":{"system":"sec-edgar","filing":"0000071829-22-000126","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182922000126/edgardoc.xml","form_type":"4"}},{"id":2246735,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice President, CAO"}}],"security":"Restricted Stock Units","published_at":"2022-06-03T23:47:11.000Z","date":"2022-06-01","kind":"exercise","acquired":false,"shares":18667,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Restricted stock units convert into common stock on a one-for-one basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each subsequent year after grant."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each subsequent year after grant."}],"balance_after":119166,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":18667},"source":{"system":"sec-edgar","filing":"0000071829-22-000122","document":"edgardoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182922000122/edgardoc.xml","form_type":"4"}},{"id":2246734,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice President, CAO"}}],"security":"Restricted Stock Units","published_at":"2022-06-03T23:47:11.000Z","date":"2022-06-01","kind":"exercise","acquired":false,"shares":5588,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Restricted stock units convert into common stock on a one-for-one basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each subsequent year after grant."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each subsequent year after grant."}],"balance_after":137833,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":5588},"source":{"system":"sec-edgar","filing":"0000071829-22-000122","document":"edgardoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182922000122/edgardoc.xml","form_type":"4"}},{"id":2246733,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice President, CAO"}}],"security":"Restricted Stock Units","published_at":"2022-06-03T23:47:11.000Z","date":"2022-06-01","kind":"exercise","acquired":false,"shares":17333,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Restricted stock units convert into common stock on a one-for-one basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each subsequent year after grant."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each subsequent year after grant."}],"balance_after":143421,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":17333},"source":{"system":"sec-edgar","filing":"0000071829-22-000122","document":"edgardoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182922000122/edgardoc.xml","form_type":"4"}},{"id":2246732,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice President, CAO"}}],"security":"Common Stock","published_at":"2022-06-03T23:47:11.000Z","date":"2022-06-01","kind":"tax_withholding","acquired":false,"shares":4545,"price":4.48,"value":20361.6,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares withheld to satisfy tax withholding obligations upon the vesting of restricted shares."}],"balance_after":139154,"source":{"system":"sec-edgar","filing":"0000071829-22-000122","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182922000122/edgardoc.xml","form_type":"4"}},{"id":2246731,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice President, CAO"}}],"security":"Common Stock","published_at":"2022-06-03T23:47:11.000Z","date":"2022-06-01","kind":"exercise","acquired":true,"shares":18667,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":143699,"source":{"system":"sec-edgar","filing":"0000071829-22-000122","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182922000122/edgardoc.xml","form_type":"4"}},{"id":2246730,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice President, CAO"}}],"security":"Common Stock","published_at":"2022-06-03T23:47:11.000Z","date":"2022-06-01","kind":"tax_withholding","acquired":false,"shares":1360,"price":4.48,"value":6092.8,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares withheld to satisfy tax withholding obligations upon the vesting of restricted shares."}],"balance_after":125032,"source":{"system":"sec-edgar","filing":"0000071829-22-000122","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182922000122/edgardoc.xml","form_type":"4"}},{"id":2246729,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice President, CAO"}}],"security":"Common Stock","published_at":"2022-06-03T23:47:11.000Z","date":"2022-06-01","kind":"exercise","acquired":true,"shares":5588,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":126392,"source":{"system":"sec-edgar","filing":"0000071829-22-000122","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182922000122/edgardoc.xml","form_type":"4"}},{"id":2246728,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice President, CAO"}}],"security":"Common Stock","published_at":"2022-06-03T23:47:11.000Z","date":"2022-06-01","kind":"tax_withholding","acquired":false,"shares":4220,"price":4.48,"value":18905.6,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares withheld to satisfy tax withholding obligations upon the vesting of restricted shares."}],"balance_after":120804,"source":{"system":"sec-edgar","filing":"0000071829-22-000122","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182922000122/edgardoc.xml","form_type":"4"}},{"id":2246727,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice President, CAO"}}],"security":"Common Stock","published_at":"2022-06-03T23:47:11.000Z","date":"2022-06-01","kind":"exercise","acquired":true,"shares":17333,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":125024,"source":{"system":"sec-edgar","filing":"0000071829-22-000122","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182922000122/edgardoc.xml","form_type":"4"}},{"id":2262940,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice President, CAO"}}],"security":"Restricted Stock Units","published_at":"2022-05-20T20:25:27.000Z","date":"2022-05-19","kind":"grant","acquired":true,"shares":52000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each subsequent year after grant."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each subsequent year after grant."}],"balance_after":160754,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":52000},"source":{"system":"sec-edgar","filing":"0000071829-22-000099","document":"edgardoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182922000099/edgardoc.xml","form_type":"4"}},{"id":2469161,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice President, CAO"}}],"security":"Common Stock","published_at":"2021-12-17T16:14:21.000Z","date":"2021-12-14","kind":"grant","acquired":true,"shares":1248,"price":1.972,"value":2461.056,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"These shares were acquired under the Newpark Resources, Inc. Amended and Restated Employee Stock Purchase Plan in transactions that were exempt under both Rule 16-3(d) and Rule 16b-3(c)."}],"balance_after":107691,"source":{"system":"sec-edgar","filing":"0000071829-21-000156","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182921000156/edgardoc.xml","form_type":"4"}},{"id":2499865,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice President, CAO"}}],"security":"Restricted Stock Units","published_at":"2021-11-23T15:40:21.000Z","date":"2021-11-20","kind":"exercise","acquired":false,"shares":12500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Restricted stock units convert into common stock on a one-for-one basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The restricted stock units vest at a rate of 50% of the shares on November 20, 2021 and 50% of the shares on November 20, 2023."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The restricted stock units vest at a rate of 50% of the shares on November 20, 2021 and 50% of the shares on November 20, 2023."}],"balance_after":108754,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":12500},"source":{"system":"sec-edgar","filing":"0000071829-21-000145","document":"edgardoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182921000145/edgardoc.xml","form_type":"4"}},{"id":2499864,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice President, CAO"}}],"security":"Common Stock","published_at":"2021-11-23T15:40:21.000Z","date":"2021-11-20","kind":"tax_withholding","acquired":false,"shares":3043,"price":2.72,"value":8276.96,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares withheld to satisfy tax withholding obligations upon the vesting of restricted shares."}],"balance_after":106443,"source":{"system":"sec-edgar","filing":"0000071829-21-000145","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182921000145/edgardoc.xml","form_type":"4"}},{"id":2499863,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice President, CAO"}}],"security":"Common Stock","published_at":"2021-11-23T15:40:21.000Z","date":"2021-11-20","kind":"exercise","acquired":true,"shares":12500,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":109486,"source":{"system":"sec-edgar","filing":"0000071829-21-000145","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182921000145/edgardoc.xml","form_type":"4"}},{"id":2599084,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice President, CAO"}}],"security":"Common Stock","published_at":"2021-08-18T13:39:35.000Z","date":"2021-08-14","kind":"grant","acquired":true,"shares":2000,"price":1.972,"value":3944.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"These shares were acquired under the Newpark Resources, Inc. Amended and Restated Employee Stock Purchase Plan in transactions that were exempt under both Rule 16-3(d) and Rule 16b-3(c)."}],"balance_after":96986,"source":{"system":"sec-edgar","filing":"0000071829-21-000121","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182921000121/edgardoc.xml","form_type":"4"}},{"id":2685333,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Restricted Stock Units","published_at":"2021-06-04T00:38:11.000Z","date":"2021-05-20","kind":"grant","acquired":true,"shares":56000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each subsequent year after grant."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each subsequent year after grant."}],"balance_after":148893,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":56000},"source":{"system":"sec-edgar","filing":"0000071829-21-000105","document":"edgardoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182921000105/edgardoc.xml","form_type":"4"}},{"id":2685318,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Restricted Stock Units","published_at":"2021-06-03T11:48:18.000Z","date":"2021-06-01","kind":"exercise","acquired":false,"shares":4716,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Restricted stock units convert into common stock on a one-for-one basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each subsequent year after grant."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each subsequent year after grant."}],"balance_after":65254,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":4716},"source":{"system":"sec-edgar","filing":"0000071829-21-000088","document":"edgardoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182921000088/edgardoc.xml","form_type":"4"}},{"id":2685317,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Restricted Stock Units","published_at":"2021-06-03T11:48:18.000Z","date":"2021-06-01","kind":"exercise","acquired":false,"shares":5589,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Restricted stock units convert into common stock on a one-for-one basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each subsequent year after grant."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each subsequent year after grant."}],"balance_after":69970,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":5589},"source":{"system":"sec-edgar","filing":"0000071829-21-000088","document":"edgardoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182921000088/edgardoc.xml","form_type":"4"}},{"id":2685316,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Restricted Stock Units","published_at":"2021-06-03T11:48:18.000Z","date":"2021-06-01","kind":"exercise","acquired":false,"shares":17334,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Restricted stock units convert into common stock on a one-for-one basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each subsequent year after grant."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each subsequent year after grant."}],"balance_after":75559,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":17334},"source":{"system":"sec-edgar","filing":"0000071829-21-000088","document":"edgardoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182921000088/edgardoc.xml","form_type":"4"}},{"id":2685315,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Common Stock","published_at":"2021-06-03T11:48:18.000Z","date":"2021-06-01","kind":"exercise","acquired":true,"shares":4716,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":94986,"source":{"system":"sec-edgar","filing":"0000071829-21-000088","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182921000088/edgardoc.xml","form_type":"4"}},{"id":2685314,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Common Stock","published_at":"2021-06-03T11:48:18.000Z","date":"2021-06-01","kind":"exercise","acquired":true,"shares":5589,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":90270,"source":{"system":"sec-edgar","filing":"0000071829-21-000088","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182921000088/edgardoc.xml","form_type":"4"}},{"id":2685313,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Common Stock","published_at":"2021-06-03T11:48:18.000Z","date":"2021-06-01","kind":"exercise","acquired":true,"shares":17334,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":84681,"source":{"system":"sec-edgar","filing":"0000071829-21-000088","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182921000088/edgardoc.xml","form_type":"4"}},{"id":2828469,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Common Stock","published_at":"2021-03-01T23:01:31.000Z","date":"2021-02-14","kind":"grant","acquired":true,"shares":2000,"price":1.7765,"value":3553.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"These shares were acquired under the Newpark Resources, Inc. Amended and Restated Employee Stock Purchase Plan in transactions that were exempt under both Rule 16-3(d) and Rule 16b-3(c)."}],"balance_after":67347,"source":{"system":"sec-edgar","filing":"0000071829-21-000021","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182921000021/edgardoc.xml","form_type":"4"}},{"id":3051744,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Common Stock","published_at":"2020-08-20T15:19:53.000Z","date":"2020-08-14","kind":"grant","acquired":true,"shares":2000,"price":1.7765,"value":3553.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"These shares were acquired under the Newpark Resources, Inc. Amended and Restated Employee Stock Purchase Plan in transactions that were exempt under both Rule 16-3(d) and Rule 16b-3(c)."}],"balance_after":65347,"source":{"system":"sec-edgar","filing":"0000071829-20-000096","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182920000096/edgardoc.xml","form_type":"4"}},{"id":3126082,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Restricted Stock Units","published_at":"2020-06-03T15:27:33.000Z","date":"2020-06-01","kind":"exercise","acquired":false,"shares":5589,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Restricted stock units convert into common stock on a one-for-one basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each subsequent year after grant."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each subsequent year after grant."}],"balance_after":92893,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":5589},"source":{"system":"sec-edgar","filing":"0000071829-20-000078","document":"edgardoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182920000078/edgardoc.xml","form_type":"4"}},{"id":3126081,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Restricted Stock Units","published_at":"2020-06-03T15:27:33.000Z","date":"2020-06-01","kind":"exercise","acquired":false,"shares":4717,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Restricted stock units convert into common stock on a one-for-one basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each subsequent year after grant."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each subsequent year after grant."}],"balance_after":98482,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":4717},"source":{"system":"sec-edgar","filing":"0000071829-20-000078","document":"edgardoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182920000078/edgardoc.xml","form_type":"4"}},{"id":3126080,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Restricted Stock Units","published_at":"2020-06-03T15:27:33.000Z","date":"2020-06-01","kind":"exercise","acquired":false,"shares":3461,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Restricted stock units convert into common stock on a one-for-one basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each subsequent year after grant."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each subsequent year after grant."}],"balance_after":103199,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":3461},"source":{"system":"sec-edgar","filing":"0000071829-20-000078","document":"edgardoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182920000078/edgardoc.xml","form_type":"4"}},{"id":3126079,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Common Stock","published_at":"2020-06-03T15:27:33.000Z","date":"2020-06-01","kind":"exercise","acquired":true,"shares":5589,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":63347,"source":{"system":"sec-edgar","filing":"0000071829-20-000078","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182920000078/edgardoc.xml","form_type":"4"}},{"id":3126078,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Common Stock","published_at":"2020-06-03T15:27:33.000Z","date":"2020-06-01","kind":"exercise","acquired":true,"shares":4717,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":57758,"source":{"system":"sec-edgar","filing":"0000071829-20-000078","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182920000078/edgardoc.xml","form_type":"4"}},{"id":3126077,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Common Stock","published_at":"2020-06-03T15:27:33.000Z","date":"2020-06-01","kind":"exercise","acquired":true,"shares":3461,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":53041,"source":{"system":"sec-edgar","filing":"0000071829-20-000078","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182920000078/edgardoc.xml","form_type":"4"}},{"id":3138506,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Restricted Stock Units","published_at":"2020-05-22T13:18:11.000Z","date":"2020-05-21","kind":"grant","acquired":true,"shares":52000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each subsequent year after grant."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each subsequent year after grant."}],"balance_after":106660,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":52000},"source":{"system":"sec-edgar","filing":"0000071829-20-000046","document":"edgardoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182920000046/edgardoc.xml","form_type":"4"}},{"id":3261488,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Common Stock","published_at":"2020-02-20T15:57:19.000Z","date":"2020-02-14","kind":"grant","acquired":true,"shares":2000,"price":3.5955,"value":7191.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"These shares were acquired under the Newpark Resources, Inc. Amended and Restated Employee Stock Purchase Plan in transactions that were exempt under both Rule 16-3(d) and Rule 16b-3(c)."}],"balance_after":49580,"source":{"system":"sec-edgar","filing":"0000071829-20-000006","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182920000006/edgardoc.xml","form_type":"4"}},{"id":3357016,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Common Stock","published_at":"2019-11-29T23:22:38.000Z","date":"2019-11-27","kind":"sale","acquired":false,"shares":6145,"price":6.0658,"value":37274.341,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $6.06 to $6.075, inclusive."}],"balance_after":47580,"source":{"system":"sec-edgar","filing":"0000071829-19-000133","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182919000133/edgardoc.xml","form_type":"4"}},{"id":3363764,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Restricted Stock Units","published_at":"2019-11-21T23:54:58.000Z","date":"2019-11-20","kind":"grant","acquired":true,"shares":25000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The restricted stock units will vest at a rate of 50% of the shares on November 20, 2021 and 50% of the shares on November 20, 2023."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The restricted stock units will vest at a rate of 50% of the shares on November 20, 2021 and 50% of the shares on November 20, 2023."}],"balance_after":54660,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":25000},"source":{"system":"sec-edgar","filing":"0000071829-19-000131","document":"edgardoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182919000131/edgardoc.xml","form_type":"4"}},{"id":3406712,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Common Stock","published_at":"2019-09-25T20:29:28.000Z","date":"2019-08-14","kind":"grant","acquired":true,"shares":1101,"price":5.695,"value":6270.195,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"These shares were acquired under the Newpark Resources, Inc. Amended and Restated Employee Stock Purchase Plan in transactions that were exempt under both Rule 16-3(d) and Rule 16b-3(c)."}],"balance_after":53725,"source":{"system":"sec-edgar","filing":"0000071829-19-000121","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182919000121/edgardoc.xml","form_type":"4"}},{"id":3503958,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Restricted Stock Units","published_at":"2019-06-04T19:14:30.000Z","date":"2019-06-01","kind":"exercise","acquired":false,"shares":3461,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Restricted stock units convert into common stock on a one-for-one basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each subsequent year after grant."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each subsequent year after grant."}],"balance_after":29660,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":3461},"source":{"system":"sec-edgar","filing":"0000071829-19-000090","document":"edgardoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182919000090/edgardoc.xml","form_type":"4"}},{"id":3503957,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Restricted Stock Units","published_at":"2019-06-04T19:14:30.000Z","date":"2019-06-01","kind":"exercise","acquired":false,"shares":4717,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Restricted stock units convert into common stock on a one-for-one basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each subsequent year after grant."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each subsequent year after grant."}],"balance_after":33121,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":4717},"source":{"system":"sec-edgar","filing":"0000071829-19-000090","document":"edgardoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182919000090/edgardoc.xml","form_type":"4"}},{"id":3503956,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Restricted Stock Units","published_at":"2019-06-04T19:14:30.000Z","date":"2019-06-01","kind":"exercise","acquired":false,"shares":8122,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Restricted stock units convert into common stock on a one-for-one basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each subsequent year after grant."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each subsequent year after grant."}],"balance_after":37838,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":8122},"source":{"system":"sec-edgar","filing":"0000071829-19-000090","document":"edgardoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182919000090/edgardoc.xml","form_type":"4"}},{"id":3503955,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Common Stock","published_at":"2019-06-04T19:14:30.000Z","date":"2019-06-01","kind":"tax_withholding","acquired":false,"shares":842,"price":6.99,"value":5885.58,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares withheld to satisfy tax withholding obligations upon the vesting of restricted shares."}],"balance_after":52624,"source":{"system":"sec-edgar","filing":"0000071829-19-000090","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182919000090/edgardoc.xml","form_type":"4"}},{"id":3503954,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Common Stock","published_at":"2019-06-04T19:14:30.000Z","date":"2019-06-01","kind":"exercise","acquired":true,"shares":3461,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":53466,"source":{"system":"sec-edgar","filing":"0000071829-19-000090","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182919000090/edgardoc.xml","form_type":"4"}},{"id":3503953,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Common Stock","published_at":"2019-06-04T19:14:30.000Z","date":"2019-06-01","kind":"tax_withholding","acquired":false,"shares":1148,"price":6.99,"value":8024.52,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares withheld to satisfy tax withholding obligations upon the vesting of restricted shares."}],"balance_after":50005,"source":{"system":"sec-edgar","filing":"0000071829-19-000090","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182919000090/edgardoc.xml","form_type":"4"}},{"id":3503952,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Common Stock","published_at":"2019-06-04T19:14:30.000Z","date":"2019-06-01","kind":"exercise","acquired":true,"shares":4717,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":51153,"source":{"system":"sec-edgar","filing":"0000071829-19-000090","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182919000090/edgardoc.xml","form_type":"4"}},{"id":3503951,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Common Stock","published_at":"2019-06-04T19:14:30.000Z","date":"2019-06-01","kind":"tax_withholding","acquired":false,"shares":1977,"price":6.99,"value":13819.23,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares withheld to satisfy tax withholding obligations upon the vesting of restricted shares."}],"balance_after":46436,"source":{"system":"sec-edgar","filing":"0000071829-19-000090","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182919000090/edgardoc.xml","form_type":"4"}},{"id":3503950,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Common Stock","published_at":"2019-06-04T19:14:30.000Z","date":"2019-06-01","kind":"exercise","acquired":true,"shares":8122,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":48413,"source":{"system":"sec-edgar","filing":"0000071829-19-000090","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182919000090/edgardoc.xml","form_type":"4"}},{"id":3511221,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Restricted Stock Units","published_at":"2019-05-28T16:07:01.000Z","date":"2019-05-23","kind":"grant","acquired":true,"shares":16766,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each subsequent year after grant."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each subsequent year after grant."}],"balance_after":45960,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":16766},"source":{"system":"sec-edgar","filing":"0000071829-19-000074","document":"edgardoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182919000074/edgardoc.xml","form_type":"4"}},{"id":3607504,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Common Stock","published_at":"2019-03-07T21:13:18.000Z","date":"2019-02-14","kind":"grant","acquired":true,"shares":770,"price":7.956,"value":6126.12,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"These shares were acquired under the Newpark Resources, Inc. Amended and Restated Employee Stock Purchase Plan in transactions that were exempt under both Rule 16-3(d) and Rule 16b-3(c)."},{"field":"shares","element":"transactionShares","label":"F2","text":"Corrects the aggregate number of shares actually purchased under the Newpark Resources, Inc. Amended and Restated Employee Stock Purchase Plan by the reporting person."}],"balance_after":40291,"source":{"system":"sec-edgar","filing":"0000071829-19-000023","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182919000023/edgardoc.xml","form_type":"4/A","original_submission_date":"2019-02-19"}},{"id":3652526,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Common Stock","published_at":"2019-02-19T21:45:49.000Z","date":"2019-02-14","kind":"grant","acquired":true,"shares":739,"price":7.956,"value":5879.484,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"These shares were acquired under the Newpark Resources, Inc. 2008 Amended & Restated Employee Stock Purchase Plan in transactions that were exempt under both Rule 16-3(d) and Rule 16b-3(c)."}],"balance_after":40260,"source":{"system":"sec-edgar","filing":"0000071829-19-000014","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182919000014/edgardoc.xml","form_type":"4"}},{"id":3842838,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Common Stock","published_at":"2018-08-16T18:16:55.000Z","date":"2018-08-14","kind":"grant","acquired":true,"shares":858,"price":7.14,"value":6126.12,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"These shares were acquired under the Newpark Resources, Inc. 2008 Amended & Restated Employee Stock Purchase Plan in transactions that were exempt under both Rule 16-3(d) and Rule 16b-3(c)."}],"balance_after":39521,"source":{"system":"sec-edgar","filing":"0000071829-18-000126","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182918000126/edgardoc.xml","form_type":"4"}},{"id":3907423,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Restricted Stock Units","published_at":"2018-06-05T18:28:47.000Z","date":"2018-06-01","kind":"exercise","acquired":false,"shares":8122,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Restricted stock units convert into common stock on a one-for-one basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each year."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each year."}],"balance_after":29194,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":8122},"source":{"system":"sec-edgar","filing":"0000071829-18-000103","document":"edgardoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182918000103/edgardoc.xml","form_type":"4"}},{"id":3907422,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Restricted Stock Units","published_at":"2018-06-05T18:28:47.000Z","date":"2018-06-01","kind":"exercise","acquired":false,"shares":3462,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Restricted stock units convert into common stock on a one-for-one basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each year."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each year."}],"balance_after":37316,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":3462},"source":{"system":"sec-edgar","filing":"0000071829-18-000103","document":"edgardoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182918000103/edgardoc.xml","form_type":"4"}},{"id":3907421,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Restricted Stock Units","published_at":"2018-06-05T18:28:47.000Z","date":"2018-06-01","kind":"exercise","acquired":false,"shares":4428,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Restricted stock units convert into common stock on a one-for-one basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each year."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each year."}],"balance_after":40778,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":4428},"source":{"system":"sec-edgar","filing":"0000071829-18-000103","document":"edgardoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182918000103/edgardoc.xml","form_type":"4"}},{"id":3907420,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Common Stock","published_at":"2018-06-05T18:28:47.000Z","date":"2018-06-01","kind":"tax_withholding","acquired":false,"shares":1977,"price":10.85,"value":21450.45,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares withheld to satisfy tax withholding obligations upon the vesting of restricted shares."}],"balance_after":38663,"source":{"system":"sec-edgar","filing":"0000071829-18-000103","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182918000103/edgardoc.xml","form_type":"4"}},{"id":3907419,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Common Stock","published_at":"2018-06-05T18:28:47.000Z","date":"2018-06-01","kind":"exercise","acquired":true,"shares":8122,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":40640,"source":{"system":"sec-edgar","filing":"0000071829-18-000103","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182918000103/edgardoc.xml","form_type":"4"}},{"id":3907418,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Common Stock","published_at":"2018-06-05T18:28:47.000Z","date":"2018-06-01","kind":"tax_withholding","acquired":false,"shares":842,"price":10.85,"value":9135.7,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares withheld to satisfy tax withholding obligations upon the vesting of restricted shares."}],"balance_after":32518,"source":{"system":"sec-edgar","filing":"0000071829-18-000103","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182918000103/edgardoc.xml","form_type":"4"}},{"id":3907417,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Common Stock","published_at":"2018-06-05T18:28:47.000Z","date":"2018-06-01","kind":"exercise","acquired":true,"shares":3462,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":33360,"source":{"system":"sec-edgar","filing":"0000071829-18-000103","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182918000103/edgardoc.xml","form_type":"4"}},{"id":3907416,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Common Stock","published_at":"2018-06-05T18:28:47.000Z","date":"2018-06-01","kind":"tax_withholding","acquired":false,"shares":1078,"price":10.85,"value":11696.3,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares withheld to satisfy tax withholding obligations upon the vesting of restricted shares."}],"balance_after":29898,"source":{"system":"sec-edgar","filing":"0000071829-18-000103","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182918000103/edgardoc.xml","form_type":"4"}},{"id":3907415,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Common Stock","published_at":"2018-06-05T18:28:47.000Z","date":"2018-06-01","kind":"exercise","acquired":true,"shares":4428,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":30976,"source":{"system":"sec-edgar","filing":"0000071829-18-000103","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182918000103/edgardoc.xml","form_type":"4"}},{"id":3927313,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Restricted Stock Units","published_at":"2018-05-18T19:02:26.000Z","date":"2018-05-16","kind":"grant","acquired":true,"shares":14150,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each year."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each year."}],"balance_after":45206,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":14150},"source":{"system":"sec-edgar","filing":"0000071829-18-000075","document":"edgardoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182918000075/edgardoc.xml","form_type":"4"}},{"id":4035906,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Common Stock","published_at":"2018-02-26T20:26:19.000Z","date":"2018-02-14","kind":"grant","acquired":true,"shares":930,"price":6.5875,"value":6126.375,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"These shares were acquired under the Newpark Resources, Inc. 2008 Employee Stock Purchase Plan in transactions that were exempt under both Rule 16-3(d) and Rule 16b-3(c)."}],"balance_after":26548,"source":{"system":"sec-edgar","filing":"0000071829-18-000023","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182918000023/edgardoc.xml","form_type":"4"}},{"id":4230140,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Common Stock","published_at":"2017-08-18T15:37:45.000Z","date":"2017-08-14","kind":"grant","acquired":true,"shares":175,"price":6.2475,"value":1093.3125,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"These shares were acquired under the Newpark Resources, Inc. 2008 Employee Stock Purchase Plan in transactions that were exempt under both Rule 16-3(d) and Rule 16b-3(c)."}],"balance_after":25618,"source":{"system":"sec-edgar","filing":"0000071829-17-000100","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182917000100/edgardoc.xml","form_type":"4"}},{"id":4254990,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Common Stock","published_at":"2017-07-19T23:15:22.000Z","date":"2017-06-30","kind":"grant","acquired":true,"shares":847,"price":6.2475,"value":5291.6325,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"These shares were acquired under the Newpark Resources, Inc. 2008 Employee Stock Purchase Plan in transactions that were exempt under both Rule 16-3(d) and Rule 16b-3(c)."}],"balance_after":25443,"source":{"system":"sec-edgar","filing":"0000071829-17-000082","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182917000082/edgardoc.xml","form_type":"4"}},{"id":4297463,"issuer":{"id":4885,"kind":"organization","name":"NPK International Inc.","symbol":"NPKI"},"owners":[{"id":78416,"kind":"person","name":"WHITE DOUGLAS L","position":1,"cik":"0001608944","reported_name":"WHITE DOUGLAS L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Controller, CAO, PAO"}}],"security":"Restricted Stock Units","published_at":"2017-06-02T23:00:42.000Z","date":"2017-06-01","kind":"exercise","acquired":false,"shares":8123,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Restricted stock units convert into common stock on a one-for-one basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each year."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The restricted stock units vest in increments of one-third of the shares on June 1 of each year."}],"balance_after":31056,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":8123},"source":{"system":"sec-edgar","filing":"0000071829-17-000068","document":"edgardoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/71829/000007182917000068/edgardoc.xml","form_type":"4"}}],"next_cursor":"2017-06-02T23:00:42.000000Z,4297463"}