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Fair Value of Financial Instruments - Estimated Fair Value and Carrying Value of Financial Instrument (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022	Dec. 31, 2021
Financial assets:
Investment securities held-to-maturity	$ 12,730	$ 12,728
SBA servicing asset	5,200	5,200
Investment in BFG	4,500	4,800	$ 4,600	$ 5,900
Level 1 | Carrying Amount
Financial assets:
Cash and cash equivalents	119,043	100,567
Level 1 | Estimated Fair Value
Financial assets:
Cash and cash equivalents	119,043	100,567
Level 2 | Carrying Amount
Financial assets:
Investment securities held-to-maturity	14,403	14,292
Investment in FHLB stock	476	449
Loans held-for-sale	42,362	23,589
Accrued interest receivable	2,316	1,818
SBA servicing asset	5,233	5,210
Financial liabilities:
Total deposits	332,530	242,998
Accrued interest payable	466	54
PPP Liquidity Facility	252	314
Level 2 | Estimated Fair Value
Financial assets:
Investment securities held-to-maturity	12,730	12,728
Investment in FHLB stock	476	449
Loans held-for-sale	42,357	23,586
Accrued interest receivable	2,316	1,818
SBA servicing asset	5,233	5,210
Financial liabilities:
Total deposits	306,396	221,287
Accrued interest payable	466	54
PPP Liquidity Facility	252	314
Level 3 | Carrying Amount
Financial assets:
Loans held for investment	277,663	224,217
Investment in BFG	4,500	4,800
Level 3 | Estimated Fair Value
Financial assets:
Loans held for investment	294,533	237,225
Investment in BFG	$ 4,500	$ 4,800

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