Loans Held for Investment - Schedule of Components of Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024	Dec. 31, 2023
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans held for investment	$ 777,699	$ 758,065
Undisbursed portion of mortgage loans	(144)	(161)
Net deferred loan costs (fees)	(863)	(1,007)
Less: allowance for credit losses	(6,159)	(6,244)	$ (6,203)
Loans held for investment, net	770,533	750,653
Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans held for investment	40,130	34,139
Less: allowance for credit losses	(267)	(539)	(1)
Home Equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans held for investment	110,532	106,550
Less: allowance for credit losses	(978)	(1,224)	$ (536)
Residential mortgage loans (1-4 family)
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans held for investment	285,192	288,781
Residential mortgage loans (1-4 family) | Fixed
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans held for investment	95,692	98,694
Residential mortgage loans (1-4 family) | Variable
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans held for investment	149,370	155,948
Residential mortgage loans (1-4 family) | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans held for investment	40,130	34,139
Commercial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans held for investment	358,326	336,044
Commercial loans | Real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans held for investment	254,347	241,063
Commercial loans | Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans held for investment	103,979	94,981
Consumer loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans held for investment	134,181	133,240
Consumer loans | Home Equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans held for investment	110,532	106,550
Consumer loans | Other consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans held for investment	$ 23,649	$ 26,690