Fair Value Measurements - Carrying Amounts and Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Level 1 [Member] | Carrying Amounts [Member]
Financial assets:
Cash and cash equivalents	$ 35,324	$ 48,732
Equity Securities, FV-NI, Current	3,872	3,206
Accrued interest receivable	6,806	7,286
Financial liabilities:
Deposits	703,303	607,301
Accrued interest payable	236	2,245
Level 1 [Member] | Estimated Fair Values [Member]
Financial assets:
Cash and cash equivalents	35,324	48,732
Equity Securities, FV-NI, Current	3,872	3,206
Accrued interest receivable	6,806	7,286
Financial liabilities:
Deposits	703,303	607,301
Accrued interest payable	236	2,245
Level 2 [Member] | Carrying Amounts [Member]
Financial assets:
Investment securities - available-for-sale	267,479	254,167
Held-to-maturity Securities, Debt Maturities, Fair Value	161,385	179,286
Federal Home Loan Bank stock	5,401	8,748
Interest rate derivative cash flow hedge receivable/(payable)	0	45
Financial liabilities:
Time Deposits	492,910	512,766
Borrowings	100,084	175,599
Subordinated loans	30,057	29,914
Level 2 [Member] | Carrying Amounts [Member] | Loans receivable Member
Financial assets:
Interest rate derivative fair value hedges (payable) receivable - loans	(875)	2,047
Level 2 [Member] | Carrying Amounts [Member] | AFS Investments [Member]
Financial assets:
Interest rate derivative fair value hedges receivable - AFS investments	1,059	3,113
Level 2 [Member] | Estimated Fair Values [Member]
Financial assets:
Investment securities - available-for-sale	267,479	254,167
Held-to-maturity Securities, Debt Maturities, Fair Value	154,972	168,034
Federal Home Loan Bank stock	5,401	8,748
Interest rate derivative cash flow hedge receivable/(payable)	0	45
Financial liabilities:
Time Deposits	491,086	517,514
Borrowings	99,573	174,071
Subordinated loans	28,917	28,026
Level 2 [Member] | Estimated Fair Values [Member] | Loans receivable Member
Financial assets:
Interest rate derivative fair value hedges (payable) receivable - loans	(875)	1,477
Level 2 [Member] | Estimated Fair Values [Member] | AFS Investments [Member]
Financial assets:
Interest rate derivative fair value hedges receivable - AFS investments	1,059	3,113
Net Asset Value [Member] | Carrying Amounts [Member]
Financial assets:
Investment securities - available-for-sale	4,292	4,343
Net Asset Value [Member] | Estimated Fair Values [Member]
Financial assets:
Investment securities - available-for-sale	4,292	4,343
Level 3 [Member] | Carrying Amounts [Member]
Financial assets:
Net loans	904,386	881,232
Level 3 [Member] | Estimated Fair Values [Member]
Financial assets:
Net loans	$ 857,952	$ 823,052