Fair Value and Interest Rate Risk - Financial Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	$ 84,520	$ 94,341
Carrying Amount
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial assets, total	985,537	892,719
Financial liabilities, total	976,427	870,364
Estimated Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial assets, total	966,941	891,279
Financial liabilities, total	969,211	873,377
Level 1 | Carrying Amount | Brokered Deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deposits	48,698	17,016
Level 1 | Carrying Amount | Cash and noninterest bearing balances due from banks
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	5,182	3,264
Level 1 | Carrying Amount | Interest-bearing deposits due from banks
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	33,311	43,781
Level 1 | Estimated Fair Value | Brokered Deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deposits	47,684	17,003
Level 1 | Estimated Fair Value | Cash and noninterest bearing balances due from banks
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	5,182	3,264
Level 1 | Estimated Fair Value | Interest-bearing deposits due from banks
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	33,311	43,781
Level 2 | Carrying Amount
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	75,093	81,161
Other investments	4,450	4,450
Federal Reserve Bank stock	2,627	2,843
Federal Home Loan Bank stock	3,874	4,184
Loans held for sale	5,211	3,129
Accrued interest receivable	7,267	5,822
FHLB borrowings	85,000	90,000
Senior notes	11,640	12,000
Subordinated debt	9,840	9,811
Junior subordinated debt owed to unconsolidated trust	8,128	8,119
Accrued interest payable	585	343
Interest rate swap liability	203	738
Level 2 | Carrying Amount | Demand deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deposits	269,636	226,713
Level 2 | Carrying Amount | Savings deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deposits	71,002	109,744
Level 2 | Carrying Amount | Money market deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deposits	211,000	164,518
Level 2 | Carrying Amount | Negotiable order of withdrawal accounts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deposits	34,440	34,741
Level 2 | Carrying Amount | Time deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deposits	225,670	195,830
Level 2 | Carrying Amount | Interest rate swap receivable
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swap receivable	203	738
Level 2 | Estimated Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	75,093	81,161
Other investments	4,450	4,450
Federal Reserve Bank stock	2,627	2,843
Federal Home Loan Bank stock	3,874	4,184
Loans held for sale	5,534	3,506
Accrued interest receivable	7,267	5,822
FHLB borrowings	83,853	93,643
Senior notes	11,103	12,045
Subordinated debt	9,680	9,947
Junior subordinated debt owed to unconsolidated trust	8,128	8,119
Accrued interest payable	585	343
Interest rate swap liability	203	738
Level 2 | Estimated Fair Value | Demand deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deposits	269,636	226,713
Level 2 | Estimated Fair Value | Savings deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deposits	71,002	109,744
Level 2 | Estimated Fair Value | Money market deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deposits	211,000	164,518
Level 2 | Estimated Fair Value | Negotiable order of withdrawal accounts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deposits	34,440	34,741
Level 2 | Estimated Fair Value | Time deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deposits	221,353	195,048
Level 2 | Estimated Fair Value | Interest rate swap receivable
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swap receivable	203	738
Level 3 | Carrying Amount
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	9,427	13,180
Loans receivable, net	838,006	729,583
SBA servicing assets	886	584
Note payable	585	791
Level 3 | Estimated Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	9,427	13,180
Loans receivable, net	818,960	727,733
SBA servicing assets	1,013	617
Note payable	$ 544	$ 775