Fair Value - Schedule of Carrying Amounts and Estimated Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Financial Assets:
Securities available for sale	$ 298,326	$ 244,119
Loans held for sale	41,435	26,026
Derivative assets	347	439
Mortgage servicing rights	1,773	1,945
Level 1
Financial Assets:
Cash and due from banks	7,357	6,841
Interest-bearing cash equivalents	58,374	92,004
Financial Liabilities:
Advances by borrowers for taxes and insurance	8,179	6,537
Level 2
Financial Assets:
Securities available for sale	298,326	244,119
Loans held for sale	41,435	26,026
Derivative assets	347	439
Mortgage servicing rights	1,773	1,945
Financial Liabilities:
Deposits	793,405	711,225
Other borrowings	64,339	73,372
Level 3
Financial Assets:
Loans held for investment, net	743,279	737,551
Accrued interest receivable	5,392	5,729
Financial Liabilities:
Accrued interest payable	354	380
Carrying Amount
Financial Assets:
Cash and due from banks	7,357	6,841
Interest-bearing cash equivalents	58,374	92,004
Securities available for sale	298,326	244,119
Loans held for sale	41,435	26,026
Loans held for investment, net	753,777	750,653
Derivative assets	347	439
Mortgage servicing rights	934	1,078
Accrued interest receivable	5,392	5,729
Financial Liabilities:
Deposits	839,899	800,742
Advances by borrowers for taxes and insurance	8,179	6,537
Other borrowings	63,440	73,500
Accrued interest payable	354	380
Fair Value
Financial Assets:
Cash and due from banks	7,357	6,841
Interest-bearing cash equivalents	58,374	92,004
Securities available for sale	298,326	244,119
Loans held for sale	41,435	26,026
Loans held for investment, net	743,279	737,551
Derivative assets	347	439
Mortgage servicing rights	1,773	1,945
Accrued interest receivable	5,392	5,729
Financial Liabilities:
Deposits	793,405	711,225
Advances by borrowers for taxes and insurance	8,179	6,537
Other borrowings	64,339	73,372
Accrued interest payable	$ 354	$ 380