Fair Value - Carrying Amount and Fair Values (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Carrying amount | Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial assets:
Cash and cash equivalents	$ 187,726	$ 244,818
Carrying amount | Significant Other Observable Inputs (Level 2)
Financial assets:
Securities	116,254	79,322
SBA loans held for sale	25,282	27,373
Loans, net of allowance for loan losses	1,653,934	1,599,773
Federal Home Loan Bank stock	3,541	3,550
Accrued interest receivable	9,568	9,586
Financial liabilities:
Deposits	1,771,168	1,758,881
Borrowed funds and subordinated debentures	50,310	50,310
Accrued interest payable	132	129
Carrying amount | Significant Unobservable Inputs (Level 3)
Financial assets:
Servicing assets	1,034	1,013
Carrying amount | Significant Unobservable Inputs (Level 3) | Recurring | Corporate and other securities
Financial assets:
Securities	5,300
Estimated fair value | Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial assets:
Cash and cash equivalents	187,726	244,818
Estimated fair value | Significant Other Observable Inputs (Level 2)
Financial assets:
Securities	110,818	79,275
SBA loans held for sale	28,565	31,014
Loans, net of allowance for loan losses	1,639,657	1,605,248
Federal Home Loan Bank stock	3,541	3,550
Accrued interest receivable	9,568	9,586
Financial liabilities:
Deposits	1,761,619	1,755,670
Borrowed funds and subordinated debentures	49,393	50,842
Accrued interest payable	132	129
Estimated fair value | Significant Unobservable Inputs (Level 3)
Financial assets:
Servicing assets	1,034	$ 1,013
Estimated fair value | Significant Unobservable Inputs (Level 3) | Recurring | Corporate and other securities
Financial assets:
Securities	$ 4,900