Loans Held for Investment - Summary of Changes in the Allowance for Credit Losses (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2025	Dec. 31, 2024
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 6,244	$ 6,203
Charge-offs	(1,346)	(1,661)
Recoveries	107	172
Provision for Credit Loss	1,240	1,530
Balance at end of period	6,245	6,244
Ending allowance balance for loans individually evaluated	1,086	1,028
Ending allowance balance for loans collectively evaluated	5,159	5,216
Loans Receivable
Total	761,062	758,065
Balance of loans individually evaluated	20,723	16,659
Balance of loans collectively evaluated	740,339	741,406
1-4 Family Residential
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	2,246	1,210
Charge-offs	(272)	(306)
Recoveries		6
Provision for Credit Loss	513	550
Reallocations	94	786
Balance at end of period	2,581	2,246
Ending allowance balance for loans individually evaluated	662	477
Ending allowance balance for loans collectively evaluated	1,919	1,769
Loans Receivable
Total	237,946	254,642
Balance of loans individually evaluated	12,313	10,350
Balance of loans collectively evaluated	225,633	244,292
Construction
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	539	1
Charge-offs	(3)
Recoveries	9	2
Provision for Credit Loss	29	132
Reallocations	(428)	404
Balance at end of period	146	539
Ending allowance balance for loans collectively evaluated	146	539
Loans Receivable
Total	40,134	34,139
Balance of loans individually evaluated	884
Balance of loans collectively evaluated	39,250	34,139
Commercial Real Estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	257	2,218
Provision for Credit Loss	139	63
Reallocations	305	(2,024)
Balance at end of period	701	257
Ending allowance balance for loans collectively evaluated	701	257
Loans Receivable
Total	258,175	241,063
Balance of loans individually evaluated	1,663	1,709
Balance of loans collectively evaluated	256,512	239,354
Other Commercial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	1,209	1,586
Charge-offs	(643)	(1,114)
Recoveries	63	118
Provision for Credit Loss	255	296
Reallocations	403	323
Balance at end of period	1,287	1,209
Ending allowance balance for loans individually evaluated	200	283
Ending allowance balance for loans collectively evaluated	1,087	926
Loans Receivable
Total	89,351	94,981
Balance of loans individually evaluated	3,083	1,928
Balance of loans collectively evaluated	86,268	93,053
Home Equity
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	1,224	536
Charge-offs	(178)
Provision for Credit Loss	166	300
Reallocations	(376)	388
Balance at end of period	836	1,224
Ending allowance balance for loans individually evaluated	77	146
Ending allowance balance for loans collectively evaluated	759	1,078
Loans Receivable
Total	111,447	106,550
Balance of loans individually evaluated	2,631	2,529
Balance of loans collectively evaluated	108,816	104,021
Other Consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	769	652
Charge-offs	(250)	(241)
Recoveries	35	46
Provision for Credit Loss	138	189
Reallocations	2	123
Balance at end of period	694	769
Ending allowance balance for loans individually evaluated	147	122
Ending allowance balance for loans collectively evaluated	547	647
Loans Receivable
Total	24,009	26,690
Balance of loans individually evaluated	149	143
Balance of loans collectively evaluated	$ 23,860	$ 26,547