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Bank Owned Life Insurance (Narrative) (Details) $ in Millions | Mar. 31, 2023 USD ($)
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Bank Owned Life Insurance [Abstract] |
Bank owned life insurance, amount | $ 72.1

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- Definition Bank Owned Life Insurance [Abstract] + References No definition available. + Details
Name: | bcbp_BankOwnedLifeInsuranceAbstract
Namespace Prefix: | bcbp_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition This item represents the amount that could be realized under a life insurance contract or contracts owned by the Entity as of the date of the statement of financial position. Such Entity-owned life insurance policies are commonly known as corporate-owned life insurance (COLI) or bank-owned life insurance (BOLI). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 325 -SubTopic 30 -Section 25 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6384206&loc=d3e41899-111602 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(12)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_LifeInsuranceCorporateOrBankOwnedAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant