Fair Value and Interest Rate Risk - Financial Assets and Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	$ 91,736	$ 84,520
SBA servicing assets	987	1,000
Carrying Amount
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial assets, total	1,041,642	985,537
Financial liabilities, total	1,037,474	976,427
Estimated Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial assets, total	1,027,542	966,941
Financial liabilities, total	1,032,380	969,211
Level 1 | Carrying Amount | Brokered Deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deposits	105,089	48,698
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	1,828	5,182
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	58,424	33,311
Level 1 | Estimated Fair Value | Brokered Deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deposits	104,362	47,684
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	1,828	5,182
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	58,424	33,311
Level 2 | Carrying Amount
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	81,531	75,093
Other investments	4,450	4,450
Federal Reserve Bank stock	2,673	2,627
Federal Home Loan Bank stock	6,374	3,874
Loans held for sale	6,882	5,211
Accrued interest receivable	7,308	7,267
FHLB borrowings	150,000	85,000
Senior notes	11,619	11,640
Subordinated debt	9,847	9,840
Junior subordinated debt owed to unconsolidated trust	8,130	8,128
Accrued interest payable	771	585
Interest rate swap liability	106	203
Level 2 | Carrying Amount | Demand deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deposits	152,773	269,636
Level 2 | Carrying Amount | Savings deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deposits	56,418	71,002
Level 2 | Carrying Amount | Money market deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deposits	306,474	211,000
Level 2 | Carrying Amount | Negotiable order of withdrawal accounts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deposits	29,316	34,440
Level 2 | Carrying Amount | Time deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deposits	206,398	225,670
Level 2 | Carrying Amount | Interest Rate Swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swap receivable	106	203
Level 2 | Estimated Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	81,531	75,093
Other investments	4,450	4,450
Federal Reserve Bank stock	2,673	2,627
Federal Home Loan Bank stock	6,374	3,874
Loans held for sale	7,471	5,534
Accrued interest receivable	7,308	7,267
FHLB borrowings	149,075	83,853
Senior notes	11,162	11,103
Subordinated debt	9,758	9,680
Junior subordinated debt owed to unconsolidated trust	8,130	8,128
Accrued interest payable	771	585
Interest rate swap liability	106	203
Level 2 | Estimated Fair Value | Demand deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deposits	152,773	269,636
Level 2 | Estimated Fair Value | Savings deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deposits	56,418	71,002
Level 2 | Estimated Fair Value | Money market deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deposits	306,474	211,000
Level 2 | Estimated Fair Value | Negotiable order of withdrawal accounts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deposits	29,316	34,440
Level 2 | Estimated Fair Value | Time deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deposits	203,531	221,353
Level 2 | Estimated Fair Value | Interest Rate Swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swap receivable	106	203
Level 3 | Carrying Amount
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	10,205	9,427
Loans receivable, net	860,968	838,006
SBA servicing assets	893	886
Note payable	533	585
Level 3 | Estimated Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	10,205	9,427
Loans receivable, net	846,185	818,960
SBA servicing assets	987	1,013
Note payable	$ 504	$ 544