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Loans Receivable and Allowance for Credit Losses - Narrative (Details) - USD ($) | 3 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Mar. 31, 2023 | Mar. 31, 2022 | Dec. 31, 2022 | Dec. 31, 2021 | Oct. 01, 2021 | Jan. 01, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Loans purchased | $ 10,623,000 | $ 39,022,000 |  |  |  |
Loans receivable, gross | $ 878,769,000 |  | $ 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 | 120 days |  |  |  |  |
Interest lost on nonaccrual loans | $ 63,000 | 115,000 |  |  |  |
Maximum period for charged off of consumer installment loans | 180 days |  |  |  |  |
Number of contract modifications | 0 |  |  |  |  |
Discount to appraisal value | 5.80% |  |  |  |  |
Discount of appraisal value, selling costs | 8.00% |  |  |  |  |
Unfunded Loan Commitment |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for credit loss | $ 700,000 |  |  |  |  |
SBA Loans |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Loans receivable, gross | 34,000,000 |  | 32,500,000 |  |  |
Percentage of principal balance guaranteed |  |  |  | 75.00% | 75.00% | 90.00%
Transfer of loans held-for-sale to portfolio loans | 0 |  |  |  |  |
SBA CARES Act Paycheck Protection Program |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Loans receivable, gross | 158,000 |  | 157,000 |  |  |
Syndicated and Leveraged Loans |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Loans receivable, gross | 5,800,000 |  |  |  |  |
Non-Accrual Loans |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Impaired financing receivable, interest income, cash basis | $ 282,000 | 90,000 |  |  |  |
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 | $ 464,410,000 |  | 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 | $ 7,052,000 |  | 4,922,000 |  |  |
Residential Real Estate |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Loans purchased | 0 |  |  |  |  |
Loans receivable, gross | 118,892,000 |  | 124,140,000 |  |  |
Consumer and Other |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Loans receivable, gross | 132,410,000 |  | 141,091,000 |  |  |
Consumer and Other | Unsecured Consumer Loans |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Loans receivable, gross | 76,200,000 |  | 78,900,000 |  |  |
Consumer and Other | Unsecured Loans |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Loans purchased | 9,300,000 | $ 18,400,000 |  |  |  |
Consumer and Other | Home equity lines of credit |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Loans purchased | 1,300,000 |  |  |  |  |
Construction to Permanent - CRE |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Loans receivable, gross | $ 2,232,000 |  | $ 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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- 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/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919230-210447 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 3B -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL120267963-210447 + Details
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- Definition Amount of interest income recognized on a cash-basis method of accounting that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(3) -URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5212-111524 + Details
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