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Each RSU and DER represent a contingent right to receive one share of BWXT common stock.  In accordance with the deferral election, the DERs will be delivered to the reporting person proportionately with the RSUs to which they relate."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The dividend equivalent rights accrued on one restricted stock unit grants of which the reporting person has elected to defer receipt of the shares underlying the RSUs. Each RSU and DER represent a contingent right to receive one share of BWXT common stock.  In accordance with the deferral election, the DERs will be delivered to the reporting person proportionately with the RSUs to which they relate."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The dividend equivalent rights accrued on one restricted stock unit grants of which the reporting person has elected to defer receipt of the shares underlying the RSUs. Each RSU and DER represent a contingent right to receive one share of BWXT common stock.  In accordance with the deferral election, the DERs will be delivered to the reporting person proportionately with the RSUs to which they relate."}],"balance_after":9.96,"derivative":{"underlying":"Common Stock","underlying_shares":4.48},"source":{"system":"sec-edgar","filing":"0001492520-17-000013","document":"wf-form4_149097697049105.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1486957/000149252017000013/wf-form4_149097697049105.xml","form_type":"4"}},{"id":4520569,"issuer":{"id":656,"kind":"organization","name":"BWX Technologies, Inc.","symbol":"BWXT"},"owners":[{"id":40036,"kind":"person","name":"JASKA JAMES M","position":1,"cik":"0001187147","reported_name":"JASKA JAMES M","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Dividend Equivalent Rights","published_at":"2016-12-15T17:15:10.000Z","date":"2016-12-13","kind":"grant","acquired":true,"shares":5.48,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"The dividend equivalent rights accrued on one restricted stock unit grant of which the reporting person has elected to defer receipt of the shares underlying the RSUs.  Each RSU and DER represent a contingent right to receive one share of BWXT common stock.  In accordance with the deferral election, the DERs will be delivered to the reporting person proportionately with the RSUs to which they relate."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The dividend equivalent rights accrued on one restricted stock unit grant of which the reporting person has elected to defer receipt of the shares underlying the RSUs.  Each RSU and DER represent a contingent right to receive one share of BWXT common stock.  In accordance with the deferral election, the DERs will be delivered to the reporting person proportionately with the RSUs to which they relate."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The dividend equivalent rights accrued on one restricted stock unit grant of which the reporting person has elected to defer receipt of the shares underlying the RSUs.  Each RSU and DER represent a contingent right to receive one share of BWXT common stock.  In accordance with the deferral election, the DERs will be delivered to the reporting person proportionately with the RSUs to which they relate."}],"balance_after":5.48,"derivative":{"underlying":"Common Stock","underlying_shares":5.48},"source":{"system":"sec-edgar","filing":"0001492520-16-000131","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1486957/000149252016000131/edgar.xml","form_type":"4"}},{"id":4602550,"issuer":{"id":656,"kind":"organization","name":"BWX Technologies, Inc.","symbol":"BWXT"},"owners":[{"id":40036,"kind":"person","name":"JASKA JAMES M","position":1,"cik":"0001187147","reported_name":"JASKA JAMES M","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Unit","published_at":"2016-09-15T20:46:38.000Z","date":"2016-09-13","kind":"grant","acquired":true,"shares":2362,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Grant of restricted stock units pursuant to the Amended and Restated 2010 Long-Term Incentive Plan of BWX Technologies, Inc.  Each restricted stock unit represents a contingent right to receive one share of BWXT common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"RSUs vested immediately.  The reporting person elected to defer receipt of shares underlying the RSUs.  In accordance with his deferral election, vested shares will be delivered to the reporting person in one lump sum following termination of service on the Board of Directors."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"RSUs vested immediately.  The reporting person elected to defer receipt of shares underlying the RSUs.  In accordance with his deferral election, vested shares will be delivered to the reporting person in one lump sum following termination of service on the Board of Directors."}],"balance_after":2362,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":2362},"source":{"system":"sec-edgar","filing":"0001408482-16-000021","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1486957/000140848216000021/edgar.xml","form_type":"4"}}]}