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Of the total number of shares covered by the award, 50% of the award vested on October 1, 2026 and 50% will vest on September 30, 2027."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Amounts reported in Column 5 of Table I of this Form 4 reflect the reporting person's transfer of 252,390 shares pursuant to a domestic relations order. Amounts reported also include (i) an aggregate of 58,176   shares issued to the reporting person upon the vesting of time-based restricted stock units which vested September 30, 2026 and (ii) an aggregate of 122,229 unvested time-based restricted stock units previously granted to the reporting person under the Company's equity incentive plans."}],"balance_after":889975,"source":{"system":"sec-edgar","filing":"0001628280-26-065095","document":"wk-form4_1791237546.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1484008/000162828026065095/wk-form4_1791237546.xml","form_type":"4"}},{"id":4631035,"issuer":{"id":7088,"kind":"organization","name":"DLH Holdings Corp.","symbol":"DLHC"},"owners":[{"id":74707,"kind":"person","name":"Parker Zachary","position":1,"cik":"0001484008","reported_name":"Parker Zachary","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-10-05T21:59:09.000Z","date":"2026-10-01","kind":"grant","planned":false,"acquired":true,"shares":17119,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Grant of restricted stock units pursuant to the Company's 2025 Equity Incentive Plan, as amended, for service as a non-employee director. Each Restricted Stock Unit represents a contingent right to receive one share of common stock. The award vests in full on September 30, 2027."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Amounts reported in Column 5 of Table I of this Form 4 reflect the reporting person's transfer of 252,390 shares pursuant to a domestic relations order. 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The award vested in full on September 30, 2025."},{"field":"shares","element":"transactionShares","label":"F2","text":"Shares surrendered to satisfy the reporting person's tax obligations arising from the vesting of the restricted stock units."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Includes an aggregate of 180,405 shares underlying time-based restricted stock units previously granted to the reporting person pursuant to the Company's 2016 Omnibus Equity Incentive Plan."}],"balance_after":982389,"source":{"system":"sec-edgar","filing":"0000785557-25-000132","document":"wk-form4_1759438306.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/785557/000078555725000132/wk-form4_1759438306.xml","form_type":"4"}},{"id":1323568,"issuer":{"id":7088,"kind":"organization","name":"DLH Holdings Corp.","symbol":"DLHC"},"owners":[{"id":74707,"kind":"person","name":"Parker Zachary","position":1,"cik":"0001484008","reported_name":"Parker Zachary","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO and President"}}],"security":"Common Stock","published_at":"2024-12-23T21:20:44.000Z","date":"2024-12-20","kind":"grant","planned":false,"acquired":true,"shares":122229,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Grant of time-based restricted stock units pursuant to the Company's 2016 Omnibus Equity Incentive Plan. 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The award vests in full on September 30, 2027, provided that the reporting person remains in the employment of the Company as of such date."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes an aggregate of 113,458 shares underlying time-based restricted stock units previously granted to the reporting person pursuant to the Company's 2016 Omnibus Equity Incentive Plan."}],"balance_after":998719,"source":{"system":"sec-edgar","filing":"0000785557-24-000075","document":"wk-form4_1734988838.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/785557/000078555724000075/wk-form4_1734988838.xml","form_type":"4"}},{"id":1325881,"issuer":{"id":7088,"kind":"organization","name":"DLH Holdings Corp.","symbol":"DLHC"},"owners":[{"id":74707,"kind":"person","name":"Parker Zachary","position":1,"cik":"0001484008","reported_name":"Parker Zachary","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO and President"}}],"security":"Common Stock","published_at":"2024-12-19T12:35:27.000Z","date":"2024-12-17","kind":"purchase","planned":false,"acquired":true,"shares":10000,"price":7.77,"value":77700.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 of Table I is a weighted average price. The shares were purchased in multiple transactions at prices ranging from $7.72 to $7.82, inclusive. The reporting person undertakes to provide to the corporation, any security holder of the corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in footnote 1 to this Form 4."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes an aggregate of 113,458 shares underlying time-based restricted stock units previously granted to the reporting person pursuant to the Company's 2016 Omnibus Equity Incentive Plan."}],"balance_after":876490,"source":{"system":"sec-edgar","filing":"0001628280-24-051948","document":"wk-form4_1734611721.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/785557/000162828024051948/wk-form4_1734611721.xml","form_type":"4"}},{"id":1706067,"issuer":{"id":7088,"kind":"organization","name":"DLH Holdings Corp.","symbol":"DLHC"},"owners":[{"id":74707,"kind":"person","name":"Parker Zachary","position":1,"cik":"0001484008","reported_name":"Parker Zachary","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO and President"}}],"security":"Common Stock","published_at":"2023-12-19T21:36:33.000Z","date":"2023-12-15","kind":"grant","planned":false,"acquired":true,"shares":58176,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Grant of time-based restricted stock units pursuant to the Company's 2016 Omnibus Equity Incentive Plan. 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