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Loans Receivable and Allowance for Credit Losses - Narrative (Details) | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 30, 2023 USD ($) | Jun. 30, 2022 USD ($) | Jun. 30, 2023 USD ($) | Jun. 30, 2022 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 | Oct. 01, 2021 | Jan. 01, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |
Loans purchased |  |  | $ 16,443,000 | $ 98,720,000 |  |  |  |
Loans receivable, gross | $ 930,734,000 |  | $ 930,734,000 |  | $ 848,316,000 |  |  |
Maximum period of credit extension |  |  | 18 months |  |  |  |  |
Loans receivable, term to reset to FHLB rate |  |  | 5 years |  |  |  |  |
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 | $ 133,000 | $ 115,000 | $ 268,000 | 221,000 |  |  |  |
Maximum period for charged off of consumer installment loans |  |  | 180 days |  |  |  |  |
Number of contract modifications | 0 | 0 |  |  |  |  |  |
Discount to appraisal value | 5.80% |  | 5.80% |  |  |  |  |
Discount of appraisal value, selling costs | 8.00% |  | 8.00% |  |  |  |  |
Unfunded Loan Commitment |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |
Allowance for credit loss | $ 1,495,000 |  | $ 1,495,000 |  |  |  |  |
SBA Loans |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |
Loans receivable, gross | 32,800,000 |  | 32,800,000 |  | 32,500,000 |  |  |
Percentage of principal balance guaranteed |  |  |  |  |  | 75.00% | 75.00% | 90.00%
Transfer of loans held-for-sale to portfolio loans | 0 | $ 0 | 0 | 0 |  |  |  |
SBA CARES Act Paycheck Protection Program |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |
Loans receivable, gross | 135,000 |  | 135,000 |  | 157,000 |  |  |
Syndicated and Leveraged Loans |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |
Loans receivable, gross | 5,800,000 |  | 5,800,000 |  | 5,800,000 |  |  |
Non-Accrual Loans |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |
Impaired financing receivable, interest income, cash basis | 193,000 | 114,000 | $ 336,000 | 204,000 |  |  |  |
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 | 0 | $ 0 | 20,700,000 |  |  |  |
Loans receivable, gross | 511,655,000 |  | $ 511,655,000 |  | 437,443,000 |  |  |
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 | 5,525,000 |  | $ 5,525,000 |  | 4,922,000 |  |  |
Residential Real Estate |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |
Loans purchased | 0 | 0 | 0 | 0 |  |  |  |
Loans receivable, gross | 116,454,000 |  | 116,454,000 |  | 124,140,000 |  |  |
Consumer and Other |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |
Loans receivable, gross | 123,063,000 |  | $ 123,063,000 |  | 141,091,000 |  |  |
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 receivable, gross | 68,300,000 |  | $ 68,300,000 |  | 78,900,000 |  |  |
Consumer and Other | Unsecured Loans |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |
Loans purchased | 4,300,000 | 32,000,000 | 13,600,000 | 50,400,000 |  |  |  |
Consumer and Other | Home equity lines of credit |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |
Loans purchased | 1,500,000 | $ 27,700,000 | 1,500,000 | $ 27,700,000 |  |  |  |
Construction to Permanent - CRE |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |
Loans receivable, gross | $ 2,463,000 |  | $ 2,463,000 |  | $ 1,933,000 |  |  |
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 |  |  |  |  |

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