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Regulatory Matters (Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations) (Details) $ in Thousands | Dec. 31, 2025 USD ($) | Dec. 31, 2024 USD ($)
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BCB Community Bank [Member] |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
Total capital (to risk-weighted assets): Actual - Amount | $ 344,067 | $ 363,697
Total capital (to risk-weighted assets): Actual - Ratio | 0.1039 | 0.1003
Total capital (to risk-weighted assets): For Capital Adequacy Purposes - Amount | $ 264,922 | $ 290,087
Total capital (to risk-weighted assets): For Capital Adequacy Purposes - Ratio | 0.0800 | 0.0800
Total capital (to risk-weighted assets): To be Well Capitalized under Prompt Corrective Action Provisions - Amount | $ 298,037 | $ 326,348
Total capital (to risk-weighted assets): To be Well Capitalized under Prompt Corrective Action Provisions - Ratio | 0.0900 | 0.0900
Bancorp [Member] |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
Total capital (to risk-weighted assets): Actual - Amount | $ 377,318 | $ 400,591
Total capital (to risk-weighted assets): Actual - Ratio | 0.1343 | 0.1289
Total capital (to risk-weighted assets): For Capital Adequacy Purposes - Amount | $ 224,761 | $ 248,621
Total capital (to risk-weighted assets): For Capital Adequacy Purposes - Ratio | 0.0800 | 0.0800
Total capital (to risk-weighted assets): To be Well Capitalized under Prompt Corrective Action Provisions - Amount | $ 280,952 | $ 310,777
Total capital (to risk-weighted assets): To be Well Capitalized under Prompt Corrective Action Provisions - Ratio | 0.1000 | 0.1000
Tier 1 capital (to risk-weighted assets): Actual - Amount | $ 304,541 | $ 326,965
Tier 1 capital (to risk-weighted assets): Actual - Ratio | 0.1084 | 0.1052
Tier 1 capital (to risk-weighted assets): For Capital Adequacy Purposes - Amount | $ 168,565 | $ 186,482
Tier 1 capital (to risk-weighted assets): For Capital Adequacy Purposes - Ratio | 0.0600 | 0.0600
Tier 1 capital (to risk-weighted assets): To be Well Capitalized under Prompt Corrective Action Provisions - Amount | $ 168,565 | $ 186,482
Tier 1 capital (to risk-weighted assets): To be Well Capitalized under Prompt Corrective Action Provisions - Ratio | 0.0600 | 0.0600
Common Equity Tier 1 (to risk-weighted assets): Actual - Amount | $ 275,174 | $ 298,118
Common Equity Tier 1 (to risk-weighted assets): Actual - Ratio | 0.0979 | 0.0959
Common Equity Tier 1 (to risk-weighted assets): For Capital Adequacy Purposes - Amount | $ 126,484 | $ 139,889
Common Equity Tier 1 (to risk-weighted assets): For Capital Adequacy Purposes - Ratio | 0.0450 | 0.0450
Tier 1 capital (to average assets): Actual - Amount | $ 304,541 | $ 326,965
Tier 1 capital (to average assets): Actual - Ratio | 0.0920 | 0.0902
Tier 1 capital (to average assets): For Capital Adequacy Purposes - Amount | $ 132,409 | $ 144,996
Tier 1 capital (to average assets): For Capital Adequacy Purposes - Ratio | 0.0400 | 0.0400

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- Definition Amount of total capital as defined by regulatory framework. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477270/942-505-50-1 + Details
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