v3.26.1
Schedule H, Line 4i- Schedule of Assets (Held at End of Year) (Detail) - EBP 001 [Member]
12 Months Ended
Dec. 31, 2025
USD ($)
EBP, Schedule of Asset Held for Investment [Line Items]  
Entity Tax Identification Number 22-3760320
EBP, Plan Number 001
EBP, Asset Held for Investment, Party-in-Interest [true false] true [1]
EBP, Asset Held for Investment, Participant Loan, after Deemed Distribution $ 359,842 [1]
EBP, Asset Held for Investment $ 21,848,048
Investment, Identifier [Axis]: BCB Bancorp, Inc. | Common Stock Fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Asset Held for Investment, Party-in-Interest [true false] true [1]
EBP, Investment, Issuer Name [Extensible Enumeration] Common Stock Fund [Member] [1]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member] [1]
EBP, Investment, Current Value, Type [Extensible Enumeration] BCB Bancorp Inc [Member] [1]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 1,542,582 [1]
Investment, Identifier [Axis]: Voya Retirement Insurance and Annuity Company | American Funds Cap Income Bld  
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] American Funds Cap Income Bld [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Voya Retirement Insurance and Annuity Company [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 441,621
Investment, Identifier [Axis]: Voya Retirement Insurance and Annuity Company | BlackRock LifePath Index 2030  
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] BlackRock LifePath Index 2030 [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Voya Retirement Insurance and Annuity Company [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 1,657,330
Investment, Identifier [Axis]: Voya Retirement Insurance and Annuity Company | BlackRock LifePath Index 2035  
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] BlackRock LifePath Index 2035 [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Voya Retirement Insurance and Annuity Company [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 1,256,029
Investment, Identifier [Axis]: Voya Retirement Insurance and Annuity Company | BlackRock LifePath Index 2040  
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] BlackRock LifePath Index 2040 [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Voya Retirement Insurance and Annuity Company [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 1,487,114
Investment, Identifier [Axis]: Voya Retirement Insurance and Annuity Company | BlackRock LifePath Index 2045  
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] BlackRock LifePath Index 2045 [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Voya Retirement Insurance and Annuity Company [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 178,518
Investment, Identifier [Axis]: Voya Retirement Insurance and Annuity Company | BlackRock LifePath Index 2050  
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] BlackRock LifePath Index 2050 [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Voya Retirement Insurance and Annuity Company [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 610,287
Investment, Identifier [Axis]: Voya Retirement Insurance and Annuity Company | BlackRock LifePath Index 2055  
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] BlackRock LifePath Index 2055 [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Voya Retirement Insurance and Annuity Company [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 226,324
Investment, Identifier [Axis]: Voya Retirement Insurance and Annuity Company | BlackRock LifePath Index 2060  
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] BlackRock LifePath Index 2060 [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Voya Retirement Insurance and Annuity Company [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 608,585
Investment, Identifier [Axis]: Voya Retirement Insurance and Annuity Company | BlackRock LifePath Index Return Fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] BlackRock LifePath Index Return Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Voya Retirement Insurance and Annuity Company [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 648,521
Investment, Identifier [Axis]: Voya Retirement Insurance and Annuity Company | Blackrock Life Path Index 2065  
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] Blackrock Life Path Index 2065 [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Voya Retirement Insurance and Annuity Company [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 137,917
Investment, Identifier [Axis]: Voya Retirement Insurance and Annuity Company | Blackrock Life Path Index 2070  
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] BlackRock Life Path Index 2070 [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Voya Retirement Insurance and Annuity Company [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 20,694
Investment, Identifier [Axis]: Voya Retirement Insurance and Annuity Company | DFA US Targeted VI Port Ins  
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] DFA US Targeted VI Port Ins [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Voya Retirement Insurance and Annuity Company [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 224,605
Investment, Identifier [Axis]: Voya Retirement Insurance and Annuity Company | Fidelity 500 Index Fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] Fidelity 500 Index Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Voya Retirement Insurance and Annuity Company [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 2,682,945
Investment, Identifier [Axis]: Voya Retirement Insurance and Annuity Company | Fidelity Mid Cap Index Fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] Fidelity Mid Cap Index Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Voya Retirement Insurance and Annuity Company [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 173,997
Investment, Identifier [Axis]: Voya Retirement Insurance and Annuity Company | Fidelity Real Estate Index Fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] Fidelity Real Estate Index Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Voya Retirement Insurance and Annuity Company [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 57,970
Investment, Identifier [Axis]: Voya Retirement Insurance and Annuity Company | Fidelity Small Cap Index Fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] Fidelity Small Cap Index Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Voya Retirement Insurance and Annuity Company [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 152,681
Investment, Identifier [Axis]: Voya Retirement Insurance and Annuity Company | Fidelity Total International Index Fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] Fidelity Total International Index Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Voya Retirement Insurance and Annuity Company [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 1,006,838
Investment, Identifier [Axis]: Voya Retirement Insurance and Annuity Company | Pimco Commodity Rl Rtn  
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] Pimco Commodity Rl Rtn [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Voya Retirement Insurance and Annuity Company [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 113,335
Investment, Identifier [Axis]: Voya Retirement Insurance and Annuity Company | Vanguard Balanced Index Fnd Adm  
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] Vanguard Balanced Index Fnd Adm [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Voya Retirement Insurance and Annuity Company [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 1,910,370
Investment, Identifier [Axis]: Voya Retirement Insurance and Annuity Company | Voya Core Bond Fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Asset Held for Investment, Party-in-Interest [true false] true [1]
EBP, Investment, Issuer Name [Extensible Enumeration] Voya Core Bond Fund [Member] [1]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member] [1]
EBP, Investment, Current Value, Type [Extensible Enumeration] Voya Retirement Insurance and Annuity Company [Member] [1]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 910,266 [1]
Investment, Identifier [Axis]: Voya Retirement Insurance and Annuity Company | Voya Fixed Account  
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Asset Held for Investment, Party-in-Interest [true false] true [1]
EBP, Investment, Issuer Name [Extensible Enumeration] Voya Fixed Account [Member] [1]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member] [1]
EBP, Investment, Current Value, Type [Extensible Enumeration] Voya Retirement Insurance and Annuity Company [Member] [1]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 834,148 [1]
Investment, Identifier [Axis]: Voya Retirement Insurance and Annuity Company | Voya Gov Money Market  
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Asset Held for Investment, Party-in-Interest [true false] true [1]
EBP, Investment, Issuer Name [Extensible Enumeration] Voya Gov Money Market [Member] [1]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member] [1]
EBP, Investment, Current Value, Type [Extensible Enumeration] Voya Retirement Insurance and Annuity Company [Member] [1]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 329 [1]
Investment, Identifier [Axis]: Voya Retirement Insurance and Annuity Company | Voya Large Cap Growth Fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Asset Held for Investment, Party-in-Interest [true false] true [1]
EBP, Investment, Issuer Name [Extensible Enumeration] Voya Large Cap Growth Fund [Member] [1]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member] [1]
EBP, Investment, Current Value, Type [Extensible Enumeration] Voya Retirement Insurance and Annuity Company [Member] [1]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 2,438,273 [1]
Investment, Identifier [Axis]: Voya Retirement Insurance and Annuity Company | Voya Large Cap Value Fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Asset Held for Investment, Party-in-Interest [true false] true [1]
EBP, Investment, Issuer Name [Extensible Enumeration] Voya Large Cap Value Fund [Member] [1]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member] [1]
EBP, Investment, Current Value, Type [Extensible Enumeration] Voya Retirement Insurance and Annuity Company [Member] [1]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 1,614,631 [1]
Investment, Identifier [Axis]: Voya Retirement Insurance and Annuity Company | Voya Mid Cap Growth Fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Asset Held for Investment, Party-in-Interest [true false] true [1]
EBP, Investment, Issuer Name [Extensible Enumeration] Voya Mid Cap Growth Fund [Member] [1]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member] [1]
EBP, Investment, Current Value, Type [Extensible Enumeration] Voya Retirement Insurance and Annuity Company [Member] [1]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 357,386 [1]
Investment, Identifier [Axis]: Voya Retirement Insurance and Annuity Company | Voya Mid Cap Value Fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Asset Held for Investment, Party-in-Interest [true false] true [1]
EBP, Investment, Issuer Name [Extensible Enumeration] Voya Mid Cap Value Fund [Member] [1]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member] [1]
EBP, Investment, Current Value, Type [Extensible Enumeration] Voya Retirement Insurance and Annuity Company [Member] [1]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 166,707 [1]
Investment, Identifier [Axis]: Voya Retirement Insurance and Annuity Company | Voya Small Cap Growth Fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Asset Held for Investment, Party-in-Interest [true false] true [1]
EBP, Investment, Issuer Name [Extensible Enumeration] Voya Small Cap Growth Fund [Member] [1]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member] [1]
EBP, Investment, Current Value, Type [Extensible Enumeration] Voya Retirement Insurance and Annuity Company [Member] [1]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 28,203 [1]
Maximum [Member]  
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Asset Held for Investment, Participant Loan, Interest Rate 8.50% [1]
Minimum [Member]  
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Asset Held for Investment, Participant Loan, Interest Rate 3.25% [1]
[1] A party-in-interest as defined by ERISA