{"transactions":[{"id":1696436,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO & Sr VP"}}],"security":"Common Stock","published_at":"2024-01-02T21:43:52.000Z","date":"2023-12-31","kind":"exercise","planned":false,"acquired":true,"shares":5700,"price":85.275,"value":486067.5,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents shares beneficially owned by the reporting person upon the vesting of Restricted Stock Units that were previously reported.  Payout of these shares will be deferred until June 30, 2024 due to IRS section 409A restrictions and may be subject to tax withholding at payout."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Total direct holdings include shares jointly held with spouse, shares acquired individually through the Employee Stock Purchase Plan, and shares acquired pursuant to Restricted Stock Awards, Restricted Stock Units, and Performance Share Awards."}],"balance_after":119401,"source":{"system":"sec-edgar","filing":"0001466593-24-000002","document":"wk-form4_1704231813.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000146659324000002/wk-form4_1704231813.xml","form_type":"4"}},{"id":1696435,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO & Sr VP"}}],"security":"Common Stock","published_at":"2024-01-02T21:43:52.000Z","date":"2023-12-31","kind":"grant","planned":false,"acquired":true,"shares":13800,"price":85.275,"value":1176795.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares beneficially owned by the reporting person upon the vesting of Performance Share Awards that were granted in 2022 and 2023.  Payout of these shares will be deferred until June 30, 2024 due to IRS section 409A restrictions and may be subject to tax withholding at payout."}],"balance_after":113701,"source":{"system":"sec-edgar","filing":"0001466593-24-000002","document":"wk-form4_1704231813.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000146659324000002/wk-form4_1704231813.xml","form_type":"4"}},{"id":2024676,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO & Sr VP"}}],"security":"Restricted Stock Units","published_at":"2023-02-09T21:32:21.000Z","date":"2023-02-07","kind":"grant","acquired":true,"shares":2200,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The restricted stock units vest in four equal annual installments beginning the date shown above."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"The restricted stock units vest in four equal annual installments beginning the date shown above."}],"balance_after":2200,"derivative":{"exercise_date":"2024-02-06","underlying":"Common Stock","underlying_shares":2200},"source":{"system":"sec-edgar","filing":"0001466593-23-000042","document":"wf-form4_167597832625236.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000146659323000042/wf-form4_167597832625236.xml","form_type":"4"}},{"id":2024675,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO & Sr VP"}}],"security":"Common Stock","published_at":"2023-02-09T21:32:21.000Z","date":"2023-02-07","kind":"tax_withholding","acquired":false,"shares":4783,"price":64.65,"value":309220.95,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"These shares were withheld by the Corporation to pay taxes due upon vesting of this award, exempt pursuant to Rule 16b-3(e)."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Total direct holdings include shares jointly held with spouse, shares acquired individually through the Employee Stock Purchase Plan and shares acquired pursuant to Restricted Stock Awards, Restricted Stock Units and Performance Share Awards."}],"balance_after":99901,"source":{"system":"sec-edgar","filing":"0001466593-23-000042","document":"wf-form4_167597832625236.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000146659323000042/wf-form4_167597832625236.xml","form_type":"4"}},{"id":2024674,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO & Sr VP"}}],"security":"Common Stock","published_at":"2023-02-09T21:32:21.000Z","date":"2023-02-07","kind":"grant","acquired":true,"shares":11100,"price":64.65,"value":717615.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares received upon the vesting of certain performance criteria in connection with a Performance Share Award (granted in 2020)."}],"balance_after":104684,"source":{"system":"sec-edgar","filing":"0001466593-23-000042","document":"wf-form4_167597832625236.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000146659323000042/wf-form4_167597832625236.xml","form_type":"4"}},{"id":2026465,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO & Sr VP"}}],"security":"Restricted Stock Units","published_at":"2023-02-08T21:34:40.000Z","date":"2023-02-06","kind":"exercise","acquired":false,"shares":500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The restricted stock units vest in four equal annual installments beginning the date shown above."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"The restricted stock units vest in four equal annual installments beginning the date shown above."}],"balance_after":1500,"derivative":{"exercise_date":"2023-02-06","underlying":"Common Stock","underlying_shares":1500},"source":{"system":"sec-edgar","filing":"0001466593-23-000031","document":"wf-form4_167589205688915.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000146659323000031/wf-form4_167589205688915.xml","form_type":"4"}},{"id":2026464,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO & Sr VP"}}],"security":"Restricted Stock Units","published_at":"2023-02-08T21:34:40.000Z","date":"2023-02-06","kind":"exercise","acquired":false,"shares":725,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The restricted stock units vest in four equal annual installments beginning the date shown above."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"The restricted stock units vest in four equal annual installments beginning the date shown above."}],"balance_after":1450,"derivative":{"exercise_date":"2022-02-06","underlying":"Common Stock","underlying_shares":1450},"source":{"system":"sec-edgar","filing":"0001466593-23-000031","document":"wf-form4_167589205688915.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000146659323000031/wf-form4_167589205688915.xml","form_type":"4"}},{"id":2026463,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO & Sr VP"}}],"security":"Restricted Stock Units","published_at":"2023-02-08T21:34:40.000Z","date":"2023-02-06","kind":"exercise","acquired":false,"shares":550,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The restricted stock units vest in four equal annual installments beginning the date shown above."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"The restricted stock units vest in four equal annual installments beginning the date shown above."}],"balance_after":550,"derivative":{"exercise_date":"2021-02-06","underlying":"Common Stock","underlying_shares":550},"source":{"system":"sec-edgar","filing":"0001466593-23-000031","document":"wf-form4_167589205688915.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000146659323000031/wf-form4_167589205688915.xml","form_type":"4"}},{"id":2026462,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO & Sr VP"}}],"security":"Restricted Stock Units","published_at":"2023-02-08T21:34:40.000Z","date":"2023-02-06","kind":"exercise","acquired":false,"shares":575,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The restricted stock units vest in four equal annual installments beginning the date shown above."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"The restricted stock units vest in four equal annual installments beginning the date shown above."}],"balance_after":0,"derivative":{"exercise_date":"2020-02-06","underlying":"Common Stock","underlying_shares":0},"source":{"system":"sec-edgar","filing":"0001466593-23-000031","document":"wf-form4_167589205688915.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000146659323000031/wf-form4_167589205688915.xml","form_type":"4"}},{"id":2026461,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO & Sr VP"}}],"security":"Common Stock","published_at":"2023-02-08T21:34:40.000Z","date":"2023-02-06","kind":"tax_withholding","acquired":false,"shares":940,"price":65.335,"value":61414.9,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"These shares were withheld by the Corporation to pay taxes due upon vesting of this award, exempt pursuant to Rule 16b-3(e)."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Total direct holdings include shares jointly held with spouse, shares acquired individually through the Employee Stock Purchase Plan and shares acquired pursuant to Restricted Stock Awards, Restricted Stock Units and Performance Share Awards."}],"balance_after":93584,"source":{"system":"sec-edgar","filing":"0001466593-23-000031","document":"wf-form4_167589205688915.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000146659323000031/wf-form4_167589205688915.xml","form_type":"4"}},{"id":2026460,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO & Sr VP"}}],"security":"Common Stock","published_at":"2023-02-08T21:34:40.000Z","date":"2023-02-06","kind":"exercise","acquired":true,"shares":2350,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation stock."}],"balance_after":94524,"source":{"system":"sec-edgar","filing":"0001466593-23-000031","document":"wf-form4_167589205688915.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000146659323000031/wf-form4_167589205688915.xml","form_type":"4"}},{"id":2406290,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Restricted Stock Units","published_at":"2022-02-09T15:36:40.000Z","date":"2022-02-07","kind":"grant","acquired":true,"shares":2000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The restricted stock units vest in four equal annual installments which began the date shown above."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"The restricted stock units vest in four equal annual installments which began the date shown above."}],"balance_after":2000,"derivative":{"exercise_date":"2023-02-06","underlying":"Common Stock","underlying_shares":2000},"source":{"system":"sec-edgar","filing":"0001437749-22-002820","document":"rdgdoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774922002820/rdgdoc.xml","form_type":"4"}},{"id":2406289,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Common Stock","published_at":"2022-02-09T15:36:40.000Z","date":"2022-02-07","kind":"tax_withholding","acquired":false,"shares":5029,"price":61.37,"value":308629.73,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"These shares were withheld by the Corporation to pay taxes due upon vesting of this award, exempt pursuant to Rule 16b-3(e)."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Total direct holdings include shares jointly held with spouse, shares acquired individually through the Employee Stock Purchase Plan and shares acquired pursuant to Restricted Stock Awards and Performance Award distributions."}],"balance_after":92174,"source":{"system":"sec-edgar","filing":"0001437749-22-002820","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774922002820/rdgdoc.xml","form_type":"4"}},{"id":2406288,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Common Stock","published_at":"2022-02-09T15:36:40.000Z","date":"2022-02-07","kind":"grant","acquired":true,"shares":11700,"price":61.37,"value":718029.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares received upon the vesting of certain performance criteria in connection with a Performance Share Award(granted in 2019)."}],"balance_after":97203,"source":{"system":"sec-edgar","filing":"0001437749-22-002820","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774922002820/rdgdoc.xml","form_type":"4"}},{"id":2410055,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Restricted Stock Units","published_at":"2022-02-07T20:40:33.000Z","date":"2022-02-06","kind":"exercise","acquired":false,"shares":725,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The restricted stock units vest in four equal annual installments beginning the date shown above."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"The restricted stock units vest in four equal annual installments beginning the date shown above."}],"balance_after":2175,"derivative":{"exercise_date":"2022-02-06","underlying":"Common Stock","underlying_shares":2175},"source":{"system":"sec-edgar","filing":"0001437749-22-002612","document":"rdgdoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774922002612/rdgdoc.xml","form_type":"4"}},{"id":2410054,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Restricted Stock Units","published_at":"2022-02-07T20:40:33.000Z","date":"2022-02-06","kind":"exercise","acquired":false,"shares":550,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The restricted stock units vest in four equal annual installments beginning the date shown above."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"The restricted stock units vest in four equal annual installments beginning the date shown above."}],"balance_after":1100,"derivative":{"exercise_date":"2021-02-06","underlying":"Common Stock","underlying_shares":1100},"source":{"system":"sec-edgar","filing":"0001437749-22-002612","document":"rdgdoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774922002612/rdgdoc.xml","form_type":"4"}},{"id":2410053,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Restricted Stock Units","published_at":"2022-02-07T20:40:33.000Z","date":"2022-02-06","kind":"exercise","acquired":false,"shares":575,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The restricted stock units vest in four equal annual installments beginning the date shown above."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"The restricted stock units vest in four equal annual installments beginning the date shown above."}],"balance_after":575,"derivative":{"exercise_date":"2020-02-06","underlying":"Common Stock","underlying_shares":575},"source":{"system":"sec-edgar","filing":"0001437749-22-002612","document":"rdgdoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774922002612/rdgdoc.xml","form_type":"4"}},{"id":2410052,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Restricted Stock Units","published_at":"2022-02-07T20:40:33.000Z","date":"2022-02-06","kind":"exercise","acquired":false,"shares":600,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The restricted stock units vest in four equal annual installments beginning the date shown above."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"The restricted stock units vest in four equal annual installments beginning the date shown above."}],"balance_after":0,"derivative":{"exercise_date":"2019-02-06","underlying":"Common Stock","underlying_shares":0},"source":{"system":"sec-edgar","filing":"0001437749-22-002612","document":"rdgdoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774922002612/rdgdoc.xml","form_type":"4"}},{"id":2410051,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Common Stock","published_at":"2022-02-07T20:40:33.000Z","date":"2022-02-06","kind":"tax_withholding","acquired":false,"shares":980,"price":60.895,"value":59677.1,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"These shares were withheld by the Corporation to pay taxes due upon vesting of this award, exempt pursuant to Rule 16b-3(e)."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Total direct holdings include shares jointly held with spouse, shares acquired individually through the Employee Stock Purchase Plan and shares acquired pursuant to Restricted Stock Awards and Performance Award distributions."}],"balance_after":85503,"source":{"system":"sec-edgar","filing":"0001437749-22-002612","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774922002612/rdgdoc.xml","form_type":"4"}},{"id":2410050,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Common Stock","published_at":"2022-02-07T20:40:33.000Z","date":"2022-02-06","kind":"exercise","acquired":true,"shares":2450,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation common stock."}],"balance_after":86483,"source":{"system":"sec-edgar","filing":"0001437749-22-002612","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774922002612/rdgdoc.xml","form_type":"4"}},{"id":2863186,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Restricted Stock Units","published_at":"2021-02-12T17:27:35.000Z","date":"2021-02-10","kind":"grant","acquired":true,"shares":2900,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The restricted stock units vest in four equal annual installments beginning the date shown above."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"The restricted stock units vest in four equal annual installments beginning the date shown above."}],"balance_after":2900,"derivative":{"exercise_date":"2022-02-06","underlying":"Common Stock","underlying_shares":2900},"source":{"system":"sec-edgar","filing":"0001437749-21-002718","document":"rdgdoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774921002718/rdgdoc.xml","form_type":"4"}},{"id":2863185,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Common Stock","published_at":"2021-02-12T17:27:35.000Z","date":"2021-02-10","kind":"tax_withholding","acquired":false,"shares":4004,"price":42.345,"value":169549.38,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"These shares were withheld by the Corporation to pay taxes due upon vesting of this award, exempt pursuant to Rule 16b-3(e)."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Total direct holdings include shares jointly held with spouse, shares acquired individually through the Employee Stock Purchase Plan and shares acquired pursuant to Restricted Stock Awards and Performance Award distributions."}],"balance_after":84033,"source":{"system":"sec-edgar","filing":"0001437749-21-002718","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774921002718/rdgdoc.xml","form_type":"4"}},{"id":2863184,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Common Stock","published_at":"2021-02-12T17:27:35.000Z","date":"2021-02-10","kind":"grant","acquired":true,"shares":9252,"price":42.345,"value":391775.94,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares received upon the vesting of certain performance criteria in connection with a Performance Share Award(granted in 2018)."}],"balance_after":88037,"source":{"system":"sec-edgar","filing":"0001437749-21-002718","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774921002718/rdgdoc.xml","form_type":"4"}},{"id":2871756,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Restricted Stock Units","published_at":"2021-02-09T15:28:43.000Z","date":"2021-02-06","kind":"exercise","acquired":false,"shares":550,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The restricted stock units vest in four equal annual installments beginning the date shown above."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"The restricted stock units vest in four equal annual installments beginning the date shown above."}],"balance_after":1650,"derivative":{"exercise_date":"2021-02-06","underlying":"Common Stock","underlying_shares":1650},"source":{"system":"sec-edgar","filing":"0001437749-21-002284","document":"rdgdoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774921002284/rdgdoc.xml","form_type":"4"}},{"id":2871755,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Restricted Stock Units","published_at":"2021-02-09T15:28:43.000Z","date":"2021-02-06","kind":"exercise","acquired":false,"shares":575,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The restricted stock units vest in four equal annual installments beginning the date shown above."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"The restricted stock units vest in four equal annual installments beginning the date shown above."}],"balance_after":1150,"derivative":{"exercise_date":"2020-02-06","underlying":"Common Stock","underlying_shares":1150},"source":{"system":"sec-edgar","filing":"0001437749-21-002284","document":"rdgdoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774921002284/rdgdoc.xml","form_type":"4"}},{"id":2871754,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Restricted Stock Units","published_at":"2021-02-09T15:28:43.000Z","date":"2021-02-06","kind":"exercise","acquired":false,"shares":600,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The restricted stock units vest in four equal annual installments beginning the date shown above."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"The restricted stock units vest in four equal annual installments beginning the date shown above."}],"balance_after":600,"derivative":{"exercise_date":"2019-02-06","underlying":"Common Stock","underlying_shares":600},"source":{"system":"sec-edgar","filing":"0001437749-21-002284","document":"rdgdoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774921002284/rdgdoc.xml","form_type":"4"}},{"id":2871753,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Restricted Stock Units","published_at":"2021-02-09T15:28:43.000Z","date":"2021-02-06","kind":"exercise","acquired":false,"shares":625,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The restricted stock units vest in four equal annual installments which began February 6, 2018."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"The restricted stock units vest in four equal annual installments which began February 6, 2018."}],"balance_after":0,"derivative":{"exercise_date":"2021-02-06","underlying":"Common Stock","underlying_shares":0},"source":{"system":"sec-edgar","filing":"0001437749-21-002284","document":"rdgdoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774921002284/rdgdoc.xml","form_type":"4"}},{"id":2871752,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Common Stock","published_at":"2021-02-09T15:28:43.000Z","date":"2021-02-06","kind":"tax_withholding","acquired":false,"shares":940,"price":41.6625,"value":39162.75,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"These shares were withheld by the Corporation to pay taxes due upon vesting of this award, exempt pursuant to Rule 16b-3(e)."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Total direct holdings include shares jointly held with spouse, shares acquired individually through the Employee Stock Purchase Plan and shares acquired pursuant to Restricted Stock Awards and Performance Award distributions."}],"balance_after":78785,"source":{"system":"sec-edgar","filing":"0001437749-21-002284","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774921002284/rdgdoc.xml","form_type":"4"}},{"id":2871751,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Common Stock","published_at":"2021-02-09T15:28:43.000Z","date":"2021-02-06","kind":"exercise","acquired":true,"shares":2350,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation common stock."}],"balance_after":79725,"source":{"system":"sec-edgar","filing":"0001437749-21-002284","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774921002284/rdgdoc.xml","form_type":"4"}},{"id":3270584,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Restricted Stock Units","published_at":"2020-02-14T15:19:14.000Z","date":"2020-02-12","kind":"grant","acquired":true,"shares":2200,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The restricted stock units vest in four equal annual installments beginning the date shown above."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"The restricted stock units vest in four equal annual installments beginning the date shown above."}],"balance_after":2200,"derivative":{"exercise_date":"2021-02-06","underlying":"Common Stock","underlying_shares":2200},"source":{"system":"sec-edgar","filing":"0001437749-20-002684","document":"rdgdoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920002684/rdgdoc.xml","form_type":"4"}},{"id":3270583,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Common Stock","published_at":"2020-02-14T15:19:14.000Z","date":"2020-02-12","kind":"tax_withholding","acquired":false,"shares":4641,"price":54.0607,"value":250895.7087,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"These shares were withheld by the Corporation to pay taxes due upon vesting of this award, exempt pursuant to Rule 16b-3(e)."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Total direct holdings include shares jointly held with spouse, shares acquired individually through the Employee Stock Purchase Plan and shares acquired pursuant to Restricted Stock Awards and Performance Award distributions."}],"balance_after":77375,"source":{"system":"sec-edgar","filing":"0001437749-20-002684","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920002684/rdgdoc.xml","form_type":"4"}},{"id":3270582,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Common Stock","published_at":"2020-02-14T15:19:14.000Z","date":"2020-02-12","kind":"grant","acquired":true,"shares":10817,"price":54.0607,"value":584774.5919,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares received upon the vesting of certain performance criteria in connection with a Performance Share Award(granted in 2017)."}],"balance_after":82016,"source":{"system":"sec-edgar","filing":"0001437749-20-002684","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920002684/rdgdoc.xml","form_type":"4"}},{"id":3281976,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Restricted Stock Units","published_at":"2020-02-10T16:26:13.000Z","date":"2020-02-06","kind":"exercise","acquired":false,"shares":575,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","text":"The restricted stock units vest in four equal annual installments beginning with the date shown above."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F7","text":"The restricted stock units vest in four equal annual installments beginning with the date shown above."}],"balance_after":1725,"derivative":{"exercise_date":"2020-02-06","underlying":"Common Stock","underlying_shares":1725},"source":{"system":"sec-edgar","filing":"0001437749-20-002143","document":"rdgdoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920002143/rdgdoc.xml","form_type":"4"}},{"id":3281975,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Restricted Stock Units","published_at":"2020-02-10T16:26:13.000Z","date":"2020-02-06","kind":"exercise","acquired":false,"shares":600,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","text":"The restricted stock units vest in four equal annual installments beginning with the date shown above."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F7","text":"The restricted stock units vest in four equal annual installments beginning with the date shown above."}],"balance_after":1200,"derivative":{"exercise_date":"2019-02-06","underlying":"Common Stock","underlying_shares":1200},"source":{"system":"sec-edgar","filing":"0001437749-20-002143","document":"rdgdoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920002143/rdgdoc.xml","form_type":"4"}},{"id":3281974,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Restricted Stock Units","published_at":"2020-02-10T16:26:13.000Z","date":"2020-02-06","kind":"exercise","acquired":false,"shares":625,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"The restricted stock units vest in four equal annual installments which began February 6, 2018."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F6","text":"The restricted stock units vest in four equal annual installments which began February 6, 2018."}],"balance_after":625,"derivative":{"exercise_date":"2020-02-06","underlying":"Common Stock","underlying_shares":625},"source":{"system":"sec-edgar","filing":"0001437749-20-002143","document":"rdgdoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920002143/rdgdoc.xml","form_type":"4"}},{"id":3281973,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Restricted Stock Units","published_at":"2020-02-10T16:26:13.000Z","date":"2020-02-06","kind":"exercise","acquired":false,"shares":900,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The restricted stock units vest in four equal annual installments which began February 6, 2017."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"The restricted stock units vest in four equal annual installments which began February 6, 2017."}],"balance_after":0,"derivative":{"exercise_date":"2020-02-06","underlying":"Common Stock","underlying_shares":0},"source":{"system":"sec-edgar","filing":"0001437749-20-002143","document":"rdgdoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920002143/rdgdoc.xml","form_type":"4"}},{"id":3281972,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Common Stock","published_at":"2020-02-10T16:26:13.000Z","date":"2020-02-06","kind":"tax_withholding","acquired":false,"shares":945,"price":54.42,"value":51426.9,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"These shares were withheld by the Corporation to pay taxes due upon vesting of this award, exempt pursuant to Rule 16b-3(e)."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Total direct holdings include shares jointly held with spouse, shares acquired individually through the Employee Stock Purchase Plan and shares acquired pursuant to Restricted Stock Awards and Performance Award distributions."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"The reporting person no longer has a reportable beneficial interest in 176 shares of Otter Tail Corporation common stock owned individually by each of his daughters and included in the reporting person's prior reports as indirect holdings."}],"balance_after":71199,"source":{"system":"sec-edgar","filing":"0001437749-20-002143","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920002143/rdgdoc.xml","form_type":"4"}},{"id":3281971,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Common Stock","published_at":"2020-02-10T16:26:13.000Z","date":"2020-02-06","kind":"exercise","acquired":true,"shares":2700,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation common stock."}],"balance_after":72144,"source":{"system":"sec-edgar","filing":"0001437749-20-002143","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920002143/rdgdoc.xml","form_type":"4"}},{"id":3656551,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Restricted Stock Units","published_at":"2019-02-14T21:58:30.000Z","date":"2019-02-13","kind":"grant","acquired":true,"shares":2300,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The restricted stock units vest in four equal annual installments beginning the date shown above."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"The restricted stock units vest in four equal annual installments beginning the date shown above."}],"balance_after":2300,"derivative":{"exercise_date":"2020-02-06","underlying":"Common Stock","underlying_shares":2300},"source":{"system":"sec-edgar","filing":"0001437749-19-002658","document":"rdgdoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919002658/rdgdoc.xml","form_type":"4"}},{"id":3656550,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Common Stock","published_at":"2019-02-14T21:58:30.000Z","date":"2019-02-13","kind":"tax_withholding","acquired":false,"shares":8188,"price":49.6225,"value":406309.03,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"These shares were withheld by the Corporation to pay taxes due upon vesting of this award, exempt pursuant to Rule 16b-3(e)."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Total direct holdings include shares jointly held with spouse, shares acquired individually through the Employee Stock Purchase Plan and shares acquired pursuant to Restricted Stock Awards and Performance Award distributions."}],"balance_after":69444,"source":{"system":"sec-edgar","filing":"0001437749-19-002658","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919002658/rdgdoc.xml","form_type":"4"}},{"id":3656549,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Common Stock","published_at":"2019-02-14T21:58:30.000Z","date":"2019-02-13","kind":"grant","acquired":true,"shares":19162,"price":49.6225,"value":950866.345,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares received upon the vesting of certain performance criteria in connection with a Performance Share Award(granted in 2016)."}],"balance_after":77632,"source":{"system":"sec-edgar","filing":"0001437749-19-002658","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919002658/rdgdoc.xml","form_type":"4"}},{"id":3670349,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Restricted Stock Units","published_at":"2019-02-07T21:45:57.000Z","date":"2019-02-06","kind":"exercise","acquired":false,"shares":600,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","text":"The restricted stock units vest in four equal annual installments which began February 6, 2019."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F7","text":"The restricted stock units vest in four equal annual installments which began February 6, 2019."}],"balance_after":1800,"derivative":{"exercise_date":"2019-02-06","underlying":"Common Stock","underlying_shares":1800},"source":{"system":"sec-edgar","filing":"0001437749-19-002072","document":"rdgdoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919002072/rdgdoc.xml","form_type":"4"}},{"id":3670348,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Restricted Stock Units","published_at":"2019-02-07T21:45:57.000Z","date":"2019-02-06","kind":"exercise","acquired":false,"shares":625,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"The restricted stock units vest in four equal annual installments which began February 6, 2018."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F6","text":"The restricted stock units vest in four equal annual installments which began February 6, 2018."}],"balance_after":1250,"derivative":{"exercise_date":"2019-02-06","underlying":"Common Stock","underlying_shares":1250},"source":{"system":"sec-edgar","filing":"0001437749-19-002072","document":"rdgdoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919002072/rdgdoc.xml","form_type":"4"}},{"id":3670347,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Restricted Stock Units","published_at":"2019-02-07T21:45:57.000Z","date":"2019-02-06","kind":"exercise","acquired":false,"shares":900,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The restricted stock units vest in four equal annual installments which began February 6, 2017."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"The restricted stock units vest in four equal annual installments which began February 6, 2017."}],"balance_after":900,"derivative":{"exercise_date":"2019-02-06","underlying":"Common Stock","underlying_shares":900},"source":{"system":"sec-edgar","filing":"0001437749-19-002072","document":"rdgdoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919002072/rdgdoc.xml","form_type":"4"}},{"id":3670346,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Restricted Stock Units","published_at":"2019-02-07T21:45:57.000Z","date":"2019-02-06","kind":"exercise","acquired":false,"shares":725,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The restricted stock units vest in four equal installments which began February 6, 2016."}],"balance_after":0,"derivative":{"exercise_date":"2019-02-06","expiration_date":"2019-02-06","underlying":"Common Stock","underlying_shares":0},"source":{"system":"sec-edgar","filing":"0001437749-19-002072","document":"rdgdoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919002072/rdgdoc.xml","form_type":"4"}},{"id":3670345,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Common Stock","published_at":"2019-02-07T21:45:57.000Z","date":"2019-02-06","kind":"tax_withholding","acquired":false,"shares":896,"price":48.045,"value":43048.32,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"These shares were withheld by the Corporation to pay taxes due upon vesting of this award, exempt pursuant to Rule 16b-3(e)."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Total direct holdings include shares jointly held with spouse, shares acquired individually through the Employee Stock Purchase Plan and shares acquired pursuant to Restricted Stock Awards and Performance Award distributions."}],"balance_after":58470,"source":{"system":"sec-edgar","filing":"0001437749-19-002072","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919002072/rdgdoc.xml","form_type":"4"}},{"id":3670344,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Common Stock","published_at":"2019-02-07T21:45:57.000Z","date":"2019-02-06","kind":"exercise","acquired":true,"shares":2850,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation common stock."}],"balance_after":59366,"source":{"system":"sec-edgar","filing":"0001437749-19-002072","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919002072/rdgdoc.xml","form_type":"4"}},{"id":3930789,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Common Stock","published_at":"2018-05-16T17:19:09.000Z","date":"2018-05-15","kind":"sale","acquired":false,"shares":1500,"price":43.4776,"value":65216.4,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The sale reported on this Form 4 was effected pursuant to a rule 10b5-1 Sales Plan adopted by the reporting person on June 27, 2017."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported is the weighted average sale price for the transaction reported. The prices received ranged from $43.30 to $43.65. The reporting person will provide to the issuer, a security holder of the issuer, or the SEC staff, upon request, full information regarding the number of shares sold at each price within the range."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Total direct holdings include shares jointly held with spouse, shares acquired individually through the Employee Stock Purchase Plan and shares acquired pursuant to Restricted Stock Awards and Performance Award distributions."}],"balance_after":56516,"source":{"system":"sec-edgar","filing":"0001437749-18-010109","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774918010109/rdgdoc.xml","form_type":"4"}},{"id":4051927,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Common Stock","published_at":"2018-02-16T18:12:35.000Z","date":"2018-02-15","kind":"sale","acquired":false,"shares":1500,"price":40.55,"value":60825.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The sale reported on this Form 4 was effected pursuant to a rule 10b5-1 Sales Plan adopted by the reporting person on June 27, 2017."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Total direct holdings include shares jointly held with spouse, shares acquired individually through the Employee Stock Purchase Plan and shares acquired pursuant to Restricted Stock Awards and Performance Award distributions."}],"balance_after":58016,"source":{"system":"sec-edgar","filing":"0001437749-18-002750","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774918002750/rdgdoc.xml","form_type":"4"}},{"id":4070352,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Restricted Stock Units","published_at":"2018-02-08T22:51:49.000Z","date":"2018-02-06","kind":"exercise","acquired":false,"shares":625,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"The restricted stock units vest in four equal annual installments which began February 6, 2018."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F6","text":"The restricted stock units vest in four equal annual installments which began February 6, 2018."}],"balance_after":1875,"derivative":{"exercise_date":"2018-02-06","underlying":"Common Stock","underlying_shares":1875},"source":{"system":"sec-edgar","filing":"0001437749-18-002087","document":"rdgdoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774918002087/rdgdoc.xml","form_type":"4"}},{"id":4070351,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Restricted Stock Units","published_at":"2018-02-08T22:51:49.000Z","date":"2018-02-06","kind":"exercise","acquired":false,"shares":900,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The restricted stock units vest in four equal annual installments which began February 6, 2017."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"The restricted stock units vest in four equal annual installments which began February 6, 2017."}],"balance_after":1800,"derivative":{"exercise_date":"2018-02-06","underlying":"Common Stock","underlying_shares":1800},"source":{"system":"sec-edgar","filing":"0001437749-18-002087","document":"rdgdoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774918002087/rdgdoc.xml","form_type":"4"}},{"id":4070350,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Restricted Stock Units","published_at":"2018-02-08T22:51:49.000Z","date":"2018-02-06","kind":"exercise","acquired":false,"shares":725,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The restricted stock units vest in four equal installments which began February 6, 2016."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"The restricted stock units vest in four equal installments which began February 6, 2016."}],"balance_after":725,"derivative":{"exercise_date":"2018-02-06","underlying":"Common Stock","underlying_shares":725},"source":{"system":"sec-edgar","filing":"0001437749-18-002087","document":"rdgdoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774918002087/rdgdoc.xml","form_type":"4"}},{"id":4070349,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Common Stock","published_at":"2018-02-08T22:51:49.000Z","date":"2018-02-06","kind":"tax_withholding","acquired":false,"shares":638,"price":39.775,"value":25376.45,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"These shares were withheld by the Corporation to pay taxes due upon vesting of this award, exempt pursuant to Rule 16b-3(e)."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Total direct holdings include shares jointly held with spouse, shares acquired individually through the Employee Stock Purchase Plan and shares acquired pursuant to Restricted Stock Awards and Performance Award distributions."}],"balance_after":59516,"source":{"system":"sec-edgar","filing":"0001437749-18-002087","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774918002087/rdgdoc.xml","form_type":"4"}},{"id":4070348,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Common Stock","published_at":"2018-02-08T22:51:49.000Z","date":"2018-02-06","kind":"exercise","acquired":true,"shares":2250,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation common stock."}],"balance_after":60154,"source":{"system":"sec-edgar","filing":"0001437749-18-002087","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774918002087/rdgdoc.xml","form_type":"4"}},{"id":4072131,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Restricted Stock Units","published_at":"2018-02-07T22:33:20.000Z","date":"2018-02-05","kind":"grant","acquired":true,"shares":2400,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The restricted stock units vest in four equal annual installments beginning the date shown above."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"The restricted stock units vest in four equal annual installments beginning the date shown above."}],"balance_after":2400,"derivative":{"exercise_date":"2019-02-06","underlying":"Common Stock","underlying_shares":2400},"source":{"system":"sec-edgar","filing":"0001437749-18-001954","document":"rdgdoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774918001954/rdgdoc.xml","form_type":"4"}},{"id":4072130,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Common Stock","published_at":"2018-02-07T22:33:20.000Z","date":"2018-02-05","kind":"tax_withholding","acquired":false,"shares":6309,"price":41.325,"value":260719.425,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Total direct holdings include shares jointly held with spouse, shares acquired individually through the Employee Stock Purchase Plan and shares acquired pursuant to Restricted Stock Awards and Performance Award distributions."}],"balance_after":57904,"source":{"system":"sec-edgar","filing":"0001437749-18-001954","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774918001954/rdgdoc.xml","form_type":"4"}},{"id":4072129,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Common Stock","published_at":"2018-02-07T22:33:20.000Z","date":"2018-02-05","kind":"grant","acquired":true,"shares":14688,"price":41.325,"value":606981.6,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares received upon the vesting of certain performance criteria in connection with a Performance Shares Award(granted in 2015)."}],"balance_after":64213,"source":{"system":"sec-edgar","filing":"0001437749-18-001954","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774918001954/rdgdoc.xml","form_type":"4"}},{"id":4162143,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Common Stock","published_at":"2017-11-15T21:38:15.000Z","date":"2017-11-15","kind":"sale","acquired":false,"shares":1500,"price":46.5,"value":69750.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The sale reported on this Form 4 was effected pursuant to a rule 10b5-1 Sales Plan adopted by the reporting person on June 27, 2017."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Total direct holdings include shares jointly held with spouse, shares acquired individually through the Employee Stock Purchase Plan and shares acquired pursuant to Restricted Stock Awards and Performance Award distributions."}],"balance_after":49525,"source":{"system":"sec-edgar","filing":"0001437749-17-019469","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774917019469/rdgdoc.xml","form_type":"4"}},{"id":4232393,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Common Stock","published_at":"2017-08-16T21:58:57.000Z","date":"2017-08-16","kind":"sale","acquired":false,"shares":1500,"price":41.75,"value":62625.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The sale reported on this Form 4 was effected pursuant to a rule 10b5-1 Sales Plan adopted by the reporting person on June 27, 2017."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Total direct holdings include shares jointly held with spouse, shares acquired individually through the Employee Stock Purchase Plan and shares acquired pursuant to Restricted Stock Awards and Performance Award distributions."}],"balance_after":51025,"source":{"system":"sec-edgar","filing":"0001437749-17-014918","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774917014918/rdgdoc.xml","form_type":"4"}},{"id":4320840,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Common Stock","published_at":"2017-05-15T21:55:52.000Z","date":"2017-05-15","kind":"sale","acquired":false,"shares":800,"price":37.25,"value":29800.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The sale reported on this Form 4 was effected pursuant to a rule 10b5-1 Sales Plan by the reporting person on July 5, 2016."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Total direct holdings include shares jointly held with spouse, shares acquired individually through the Employee Stock Purchase Plan and shares acquired pursuant to Restricted Stock Awards and Performance Award distributions."}],"balance_after":52525,"source":{"system":"sec-edgar","filing":"0001437749-17-009294","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774917009294/rdgdoc.xml","form_type":"4"}},{"id":4442553,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Common Stock","published_at":"2017-02-16T18:06:56.000Z","date":"2017-02-15","kind":"sale","acquired":false,"shares":800,"price":37.8,"value":30240.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 Sales Plan adopted by the reporting person on July 5, 2016."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Total direct holdings include shares jointly held with spouse, shares acquired individually through the Employee Stock Purchase Plan and shares acquired pursuant to Restricted Stock Awards and Performance Award distributions."}],"balance_after":53325,"source":{"system":"sec-edgar","filing":"0001437749-17-002658","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774917002658/rdgdoc.xml","form_type":"4"}},{"id":4461475,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Restricted Stock","published_at":"2017-02-08T16:16:35.000Z","date":"2017-02-06","kind":"exercise","acquired":false,"shares":1625,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"These shares represent restricted stock units granted in 2015 and 2016, each of which vest in four equal installments on February 6 each year until vesting is completed."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"These shares represent restricted stock units granted in 2015 and 2016, each of which vest in four equal installments on February 6 each year until vesting is completed."}],"balance_after":4150,"derivative":{"exercise_date":"2017-02-06","underlying":"Common Stock","underlying_shares":5775},"source":{"system":"sec-edgar","filing":"0001437749-17-001904","document":"rdgdoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774917001904/rdgdoc.xml","form_type":"4"}},{"id":4461474,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Common Stock","published_at":"2017-02-08T16:16:35.000Z","date":"2017-02-06","kind":"tax_withholding","acquired":false,"shares":475,"price":38.35,"value":18216.25,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"These shares were withheld by the Corporation to pay taxes due upon vesting of this award, exempt pursuant to Rule 16b-3(e)."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Total direct holdings include shares jointly held with spouse, shares acquired individually through the Employee Stock Purchase Plan and shares acquired pursuant to Restricted Stock Awards and Performance Award distributions."}],"balance_after":54125,"source":{"system":"sec-edgar","filing":"0001437749-17-001904","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774917001904/rdgdoc.xml","form_type":"4"}},{"id":4461473,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Common Stock","published_at":"2017-02-08T16:16:35.000Z","date":"2017-02-06","kind":"exercise","acquired":true,"shares":1625,"ownership":{"direct":true},"footnotes":[{"field":"date","element":"transactionDate","label":"F1","text":"These shares represent restricted stock units granted in 2015 and 2016, each of which vest in four equal installments on February 6 each year until vesting is completed."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation stock."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Total direct holdings include shares jointly held with spouse, shares acquired individually through the Employee Stock Purchase Plan and shares acquired pursuant to Restricted Stock Awards and Performance Award distributions."}],"balance_after":54600,"source":{"system":"sec-edgar","filing":"0001437749-17-001904","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774917001904/rdgdoc.xml","form_type":"4"}},{"id":4468582,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Restricted Stock Units","published_at":"2017-02-04T00:37:40.000Z","date":"2017-02-02","kind":"grant","acquired":true,"shares":2500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The restricted stock units vest in four equal annual installments beginning the date shown above."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"The restricted stock units vest in four equal annual installments beginning the date shown above."}],"balance_after":2500,"derivative":{"exercise_date":"2018-02-06","underlying":"Common Stock","underlying_shares":2500},"source":{"system":"sec-edgar","filing":"0001437749-17-001660","document":"rdgdoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774917001660/rdgdoc.xml","form_type":"4"}},{"id":4468581,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Common Stock","published_at":"2017-02-04T00:37:40.000Z","date":"2017-02-02","kind":"tax_withholding","acquired":false,"shares":6729,"price":37.65,"value":253346.85,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Total direct holdings include shares jointly held with spouse, shares acquired individually pursuant to Restricted Stock Awards and Performance Award distributions."}],"balance_after":52975,"source":{"system":"sec-edgar","filing":"0001437749-17-001660","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774917001660/rdgdoc.xml","form_type":"4"}},{"id":4468580,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Common Stock","published_at":"2017-02-04T00:37:40.000Z","date":"2017-02-02","kind":"grant","acquired":true,"shares":14972,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"acquired","element":"transactionAcquiredDisposedCode","label":"F1","text":"Represents shares received upon the vesting of certain performance criteria in connection with a Performance Shares Award(granted in 2014)."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Total direct holdings include shares jointly held with spouse, shares acquired individually pursuant to Restricted Stock Awards and Performance Award distributions."}],"balance_after":59704,"source":{"system":"sec-edgar","filing":"0001437749-17-001660","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774917001660/rdgdoc.xml","form_type":"4"}},{"id":4560635,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":95662,"kind":"person","name":"MOUG KEVIN G","position":1,"cik":"0001191492","reported_name":"MOUG KEVIN G","relationship":{"officer":true,"officer_title":"CFO & Sr VP"}}],"security":"Common Stock","published_at":"2016-11-10T20:38:19.000Z","date":"2016-11-10","kind":"sale","acquired":false,"shares":800,"price":35.2,"value":28160.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 Sales Plan adopted by the reporting person on July 5, 2016."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Total direct holdings include shares jointly held with spouse, shares acquired individually through the Employee Stock Purchase Plan and shares acquired pursuant to Restricted Stock Awards and Performance Award distributions."}],"balance_after":44732,"source":{"system":"sec-edgar","filing":"0001437749-16-041743","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774916041743/rdgdoc.xml","form_type":"4"}}]}