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Loans Receivables and Allowance for Credit Losses - Narrative (Details) | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Jan. 01, 2023 USD ($) | Oct. 01, 2021 | Jan. 01, 2021 | Dec. 31, 2020 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Loans purchased | $ 21,108,000 | $ 141,412,000 | $ 89,338,000 |  |  |  |
Maximum period of credit extension | 18 months |  |  |  |  |  |
Loans receivable, gross | $ 848,859,000 | 848,316,000 |  |  |  |  |
Loans receivable, term to reset to FHLB rate | 5 years |  |  |  |  |  |
Allowance for credit loss | $ 15,925,000 | 10,310,000 | 9,905,000 | $ 10,310,000 |  |  | $ 10,584,000
Period for charged off of open-end credits | 180 days |  |  |  |  |  |
Period for charged off of close-end credits | 90 days |  |  |  |  |  |
Interest lost on nonaccrual loans | $ 938,000 | $ 372,000 | 802,000 |  |  |  |
Maximum period for charged off of consumer installment loans | 180 days |  |  |  |  |  |
Discount to appraisal value | 5.80% |  |  |  |  |  |
Discount of appraisal value, selling costs | 8.00% |  |  |  |  |  |
Number of contract modifications | 0 | 0 |  |  |  |  |
Unfunded Loan Commitment |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Allowance for credit loss | $ 271,000 |  |  |  |  |  |
SBA Loans |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Loans receivable, gross | 30,000,000 | $ 32,500,000 |  |  |  |  |
Percentage of principal balance guaranteed |  | 75.00% |  |  | 75.00% | 90.00% |
Syndicated and Leveraged Loans |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Loans receivable | 5,700,000 | $ 5,800,000 |  |  |  |  |
Non-Accrual Loans |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Interest income collected and recognized on non-accruing loans | $ 255,000 | 329,000 | 377,000 |  |  |  |
Commercial Real Estate |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Maximum percentage of credit extension based on market value of collateral | 75.00% |  |  |  |  |  |
Loans purchased | $ 0 | 20,700,000 |  |  |  |  |
Loans receivable, gross | 472,093,000 | 437,443,000 |  |  |  |  |
Allowance for credit loss | $ 6,089,000 | 6,966,000 | 5,063,000 | 6,966,000 |  |  | 4,485,000
Multi-family Real Estate |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Maximum percentage of credit extension based on market value of collateral | 80.00% |  |  |  |  |  |
Construction |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Percentage of maximum loan to value | 75.00% |  |  |  |  |  |
Loans receivable, gross | $ 4,266,000 | 4,922,000 |  |  |  |  |
Allowance for credit loss | 4,000 | 24,000 | 78,000 | 24,000 |  |  | 739,000
Residential Real Estate |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Loans purchased | 0 |  |  |  |  |  |
Loans receivable, gross | 106,783,000 | 124,140,000 |  |  |  |  |
Allowance for credit loss | 607,000 | 665,000 | 1,700,000 | 665,000 |  |  | 1,379,000
Consumer and Other |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Loans receivable, gross | 99,688,000 | 141,091,000 |  |  |  |  |
Allowance for credit loss | $ 7,843,000 | 1,207,000 | 253,000 | 1,207,000 |  |  | 295,000
Consumer and Other | Minimum |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Loans receivable term | 2 years |  |  |  |  |  |
Consumer and Other | Maximum |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Loans receivable term | 5 years |  |  |  |  |  |
Consumer and Other | Unsecured Consumer Loans |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Loans purchased | $ 15,400,000 | 90,100,000 |  |  |  |  |
Loans receivable | 48,500,000 | 78,900,000 |  |  |  |  |
Consumer and Other | HELOC Loans |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Loans receivable | 5,700,000 | 30,600,000 |  |  |  |  |
Construction to Permanent - CRE |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Loans receivable, gross | 2,464,000 | 1,933,000 |  |  |  |  |
Allowance for credit loss | $ 113,000 | 10,000 | $ 41,000 | $ 10,000 |  |  | $ 162,000
Construction to Permanent - CRE | Minimum |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Loans receivable term | 20 years |  |  |  |  |  |
Construction to Permanent - CRE | Maximum |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Loans receivable term | 25 years |  |  |  |  |  |
Commercial and Industrial Loans | SBA CARES Act Paycheck Protection Program |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Loans receivable | $ 133,000 | $ 157,000 |  |  |  |  |

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- Definition Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479344/326-20-45-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-3B Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-5 + Details
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