v3.26.1
Schedule of Assets - Schedule of Assets Held at End of Year (Details) - EBP 001
12 Months Ended
Dec. 31, 2025
USD ($)
EBP, Investment, Fair Value and NAV [Line Items]  
EBP, Plan Name 401(k) Retirement Savings Plan
Entity Tax Identification Number 38-2367843
EBP, Plan Number 001
Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value $ 119,789,931
Notes receivable from participants 969,523
TOTAL 120,759,454
Investment, Identifier [Axis]: Allspring Special Small Cap Value Fund - Class R6  
EBP, Investment, Fair Value and NAV [Line Items]  
Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value $ 483,697
EBP, Investment, Issuer Name [Extensible Enumeration] Allspring Special Small Cap Value Fund Class R6 [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Plan Interest in Master Trust, Participation Status [Extensible Enumeration] us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: American Funds American Balanced Fund Class R6  
EBP, Investment, Fair Value and NAV [Line Items]  
Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value $ 1,809,937
EBP, Investment, Issuer Name [Extensible Enumeration] American Funds American Balanced Fund Class R6 [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Plan Interest in Master Trust, Participation Status [Extensible Enumeration] us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: American Funds EuroPacific Growth Fund Class R6  
EBP, Investment, Fair Value and NAV [Line Items]  
Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value $ 4,436,202
EBP, Investment, Issuer Name [Extensible Enumeration] American Funds EuroPacific Growth Fund Class R6 [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Plan Interest in Master Trust, Participation Status [Extensible Enumeration] us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Baird Core Plus Bond Fund Class Institutional  
EBP, Investment, Fair Value and NAV [Line Items]  
Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value $ 2,973,304
EBP, Investment, Issuer Name [Extensible Enumeration] Baird Core Plus Bond Fund Class Institutional [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Plan Interest in Master Trust, Participation Status [Extensible Enumeration] us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Common Stock— Neogen Corporation  
EBP, Investment, Fair Value and NAV [Line Items]  
Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value $ 3,224,733
EBP, Asset Held for Investment, Party-in-Interest [true false] true
EBP, Investment, Issuer Name [Extensible Enumeration] us-gaap-ebp:EmployeeBenefitPlanEmployerCommonStockFundMember
EBP, Investment, Current Value, Type [Extensible Enumeration] us-gaap:CommonStockMember
EBP, Asset Held for Investment, Plan Interest in Master Trust, Participation Status [Extensible Enumeration] us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Fidelity 500 Index Fund  
EBP, Investment, Fair Value and NAV [Line Items]  
Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value $ 19,509,828
EBP, Asset Held for Investment, Party-in-Interest [true false] true
EBP, Investment, Issuer Name [Extensible Enumeration] Fidelity Five Hundred Index Fund [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Plan Interest in Master Trust, Participation Status [Extensible Enumeration] us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Fidelity Government Money Market Fund  
EBP, Investment, Fair Value and NAV [Line Items]  
Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value $ 14,737
EBP, Asset Held for Investment, Party-in-Interest [true false] true
EBP, Investment, Issuer Name [Extensible Enumeration] Fidelity Government Money Market Fund [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Plan Interest in Master Trust, Participation Status [Extensible Enumeration] us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Fidelity International Index Fund  
EBP, Investment, Fair Value and NAV [Line Items]  
Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value $ 4,200,025
EBP, Asset Held for Investment, Party-in-Interest [true false] true
EBP, Investment, Issuer Name [Extensible Enumeration] Fidelity International Index Fund [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Plan Interest in Master Trust, Participation Status [Extensible Enumeration] us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Fidelity Large Cap Growth Index Fund  
EBP, Investment, Fair Value and NAV [Line Items]  
Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value $ 5,073,907
EBP, Asset Held for Investment, Party-in-Interest [true false] true
EBP, Investment, Issuer Name [Extensible Enumeration] Fidelity Large Cap Growth Index Fund [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Plan Interest in Master Trust, Participation Status [Extensible Enumeration] us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Fidelity Large Cap Value Index Fund  
EBP, Investment, Fair Value and NAV [Line Items]  
Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value $ 758,192
EBP, Asset Held for Investment, Party-in-Interest [true false] true
EBP, Investment, Issuer Name [Extensible Enumeration] Fidelity Large Cap Value Index Fund [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Plan Interest in Master Trust, Participation Status [Extensible Enumeration] us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Fidelity Mid Cap Index Fund  
EBP, Investment, Fair Value and NAV [Line Items]  
Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value $ 3,070,235
EBP, Asset Held for Investment, Party-in-Interest [true false] true
EBP, Investment, Issuer Name [Extensible Enumeration] Fidelity Mid Cap Index Fund [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Plan Interest in Master Trust, Participation Status [Extensible Enumeration] us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Fidelity Small Cap Index Fund  
EBP, Investment, Fair Value and NAV [Line Items]  
Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value $ 1,176,420
EBP, Asset Held for Investment, Party-in-Interest [true false] true
EBP, Investment, Issuer Name [Extensible Enumeration] Fidelity Small Cap Index Fund [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Plan Interest in Master Trust, Participation Status [Extensible Enumeration] us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Fidelity U.S. Bond Index Fund  
EBP, Investment, Fair Value and NAV [Line Items]  
Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value $ 1,129,886
EBP, Asset Held for Investment, Party-in-Interest [true false] true
EBP, Investment, Issuer Name [Extensible Enumeration] Fidelity US Bond Index Fund [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Plan Interest in Master Trust, Participation Status [Extensible Enumeration] us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: JPMorgan Mid Cap Value Fund Class R6  
EBP, Investment, Fair Value and NAV [Line Items]  
Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value $ 1,135,613
EBP, Investment, Issuer Name [Extensible Enumeration] JPMorgan Mid Cap Value Fund Class R6 [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Plan Interest in Master Trust, Participation Status [Extensible Enumeration] us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Large Cap Growth III R1  
EBP, Investment, Fair Value and NAV [Line Items]  
Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value $ 7,145,486
EBP, Investment, Issuer Name [Extensible Enumeration] Large Cap Growth III R1 [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Common Collective Trust [Member]
EBP, Asset Held for Investment, Plan Interest in Master Trust, Participation Status [Extensible Enumeration] us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Putnam Stable Value Fund  
EBP, Investment, Fair Value and NAV [Line Items]  
Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value $ 4,522,331
EBP, Investment, Issuer Name [Extensible Enumeration] Putnam Stable Value Fund [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Common Collective Trust [Member]
EBP, Asset Held for Investment, Plan Interest in Master Trust, Participation Status [Extensible Enumeration] us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Russell Mid Cap Growth III R1  
EBP, Investment, Fair Value and NAV [Line Items]  
Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value $ 2,111,296
EBP, Investment, Issuer Name [Extensible Enumeration] Russell Mid Cap Growth III R1 [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Common Collective Trust [Member]
EBP, Asset Held for Investment, Plan Interest in Master Trust, Participation Status [Extensible Enumeration] us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Vanguard Equity-Income Fund Admiral Shares  
EBP, Investment, Fair Value and NAV [Line Items]  
Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value $ 3,752,595
EBP, Investment, Issuer Name [Extensible Enumeration] Vanguard Equity Income Fund Admiral Shares [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Plan Interest in Master Trust, Participation Status [Extensible Enumeration] us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Vanguard Explorer Fund Admiral Shares  
EBP, Investment, Fair Value and NAV [Line Items]  
Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value $ 2,562,403
EBP, Investment, Issuer Name [Extensible Enumeration] Vanguard Explorer Fund Admiral Shares [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Plan Interest in Master Trust, Participation Status [Extensible Enumeration] us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Vanguard Inflation-Protected Securities Fund Admiral Shares  
EBP, Investment, Fair Value and NAV [Line Items]  
Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value $ 578,583
EBP, Investment, Issuer Name [Extensible Enumeration] Vanguard Inflation Protected Securities Fund Admiral Shares [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Plan Interest in Master Trust, Participation Status [Extensible Enumeration] us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Vanguard Small-Cap Growth Index Fund Admiral Shares  
EBP, Investment, Fair Value and NAV [Line Items]  
Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value $ 174,060
EBP, Investment, Issuer Name [Extensible Enumeration] Vanguard Small Cap Growth Index Fund Admiral Shares [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Plan Interest in Master Trust, Participation Status [Extensible Enumeration] us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Vanguard Target Retirement 2020 Fund  
EBP, Investment, Fair Value and NAV [Line Items]  
Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value $ 219,534
EBP, Investment, Issuer Name [Extensible Enumeration] Vanguard Target Retirement 2020 Fund [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Plan Interest in Master Trust, Participation Status [Extensible Enumeration] us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Vanguard Target Retirement 2025 Fund  
EBP, Investment, Fair Value and NAV [Line Items]  
Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value $ 4,654,220
EBP, Investment, Issuer Name [Extensible Enumeration] Vanguard Target Retirement 2025 Fund [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Plan Interest in Master Trust, Participation Status [Extensible Enumeration] us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Vanguard Target Retirement 2030 Fund  
EBP, Investment, Fair Value and NAV [Line Items]  
Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value $ 3,319,486
EBP, Investment, Issuer Name [Extensible Enumeration] Vanguard Target Retirement 2030 Fund [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Plan Interest in Master Trust, Participation Status [Extensible Enumeration] us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Vanguard Target Retirement 2035 Fund  
EBP, Investment, Fair Value and NAV [Line Items]  
Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value $ 9,429,388
EBP, Investment, Issuer Name [Extensible Enumeration] Vanguard Target Retirement 2035 Fund [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Plan Interest in Master Trust, Participation Status [Extensible Enumeration] us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Vanguard Target Retirement 2040 Fund  
EBP, Investment, Fair Value and NAV [Line Items]  
Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value $ 1,836,702
EBP, Investment, Issuer Name [Extensible Enumeration] Vanguard Target Retirement 2040 Fund [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Plan Interest in Master Trust, Participation Status [Extensible Enumeration] us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Vanguard Target Retirement 2045 Fund  
EBP, Investment, Fair Value and NAV [Line Items]  
Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value $ 14,204,394
EBP, Investment, Issuer Name [Extensible Enumeration] Vanguard Target Retirement 2045 Fund [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Plan Interest in Master Trust, Participation Status [Extensible Enumeration] us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Vanguard Target Retirement 2050 Fund  
EBP, Investment, Fair Value and NAV [Line Items]  
Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value $ 3,291,691
EBP, Investment, Issuer Name [Extensible Enumeration] Vanguard Target Retirement 2050 Fund [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Plan Interest in Master Trust, Participation Status [Extensible Enumeration] us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Vanguard Target Retirement 2055 Fund  
EBP, Investment, Fair Value and NAV [Line Items]  
Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value $ 7,480,024
EBP, Investment, Issuer Name [Extensible Enumeration] Vanguard Target Retirement 2055 Fund [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Plan Interest in Master Trust, Participation Status [Extensible Enumeration] us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Vanguard Target Retirement 2060 Fund  
EBP, Investment, Fair Value and NAV [Line Items]  
Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value $ 1,977,603
EBP, Investment, Issuer Name [Extensible Enumeration] Vanguard Target Retirement 2060 Fund [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Plan Interest in Master Trust, Participation Status [Extensible Enumeration] us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Vanguard Target Retirement 2065 Fund  
EBP, Investment, Fair Value and NAV [Line Items]  
Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value $ 2,220,763
EBP, Investment, Issuer Name [Extensible Enumeration] Vanguard Target Retirement 2065 Fund [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Plan Interest in Master Trust, Participation Status [Extensible Enumeration] us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Vanguard Target Retirement 2070 Fund  
EBP, Investment, Fair Value and NAV [Line Items]  
Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value $ 59,815
EBP, Investment, Issuer Name [Extensible Enumeration] Vanguard Target Retirement 2070 Fund [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Plan Interest in Master Trust, Participation Status [Extensible Enumeration] us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Vanguard Target Retirement Income Fund Investor Shares  
EBP, Investment, Fair Value and NAV [Line Items]  
Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value $ 474,703
EBP, Investment, Issuer Name [Extensible Enumeration] Vanguard Target Retirement Income Fund Investor Shares [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Plan Interest in Master Trust, Participation Status [Extensible Enumeration] us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Victory Pioneer Strategic Income Fund Class R6  
EBP, Investment, Fair Value and NAV [Line Items]  
Employee benefit plan, asset held for investment, excluding plan interest in master trust, current value $ 778,138
EBP, Investment, Issuer Name [Extensible Enumeration] Victory Pioneer Strategic Income Fund Class R6 [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Plan Interest in Master Trust, Participation Status [Extensible Enumeration] us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Minimum  
EBP, Investment, Fair Value and NAV [Line Items]  
Employee benefit plan, asset held for investment, participant loan, interest rate 4.25%
Maximum  
EBP, Investment, Fair Value and NAV [Line Items]  
Employee benefit plan, asset held for investment, participant loan, interest rate 9.50%
Employee benefit plan, asset held for investment, participant loan, maturity date Dec. 31, 2030