Loans Held for Investment - Summary of Investment In Loans By Credit Quality Indicators by Year of Origin and Gross Charge-Offs (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Financing Receivable, Credit Quality Indicator [Line Items]
2025	$ 68,908	$ 143,212
2024	126,872	145,098
2023	124,429	123,258
2022	105,918	52,321
2021	47,007	46,407
Prior	152,422	130,752
Revolving Lines	135,506	117,017
Total	761,062	758,065
Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2025	68,523	142,907
2024	125,445	141,573
2023	119,291	118,041
2022	100,741	51,178
2021	45,567	45,351
Prior	147,396	127,070
Revolving Lines	132,233	114,058
Total	739,196	740,178
Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2025	264	189
2024	38
2023		1,681
2022	314
2021	41
Prior	308	220
Revolving Lines	393
Total	1,358	2,090
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2025	86	42
2024	1,389	3,444
2023	5,138	3,526
2022	4,863	1,129
2021	1,399	1,056
Prior	4,718	3,462
Revolving Lines	2,784	2,838
Total	20,377	15,497
Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
2025	35	74
2024		81
2023		10
2022		14
Prior		0
Revolving Lines	96	121
Total	131	300
Gross charge-offs
Financing Receivable, Credit Quality Indicator [Line Items]
2024	182	123
2023	240	374
2022	98	45
2021	35	178
Prior		21
Revolving Lines	791	920
Total	1,346	1,661
1-4 Family Residential
Financing Receivable, Credit Quality Indicator [Line Items]
2025	5,651	15,139
2024	17,317	65,145
2023	62,294	70,052
2022	61,721	31,886
2021	27,800	22,252
Prior	63,163	50,168
Total	237,946	254,642
1-4 Family Residential | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2025	5,651	15,139
2024	16,063	61,966
2023	58,266	66,541
2022	58,331	30,758
2021	26,537	22,112
Prior	60,478	47,915
Total	225,326	244,431
1-4 Family Residential | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2023		257
2022	253
Prior	67	32
Total	320	289
1-4 Family Residential | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2024	1,254	3,179
2023	4,028	3,254
2022	3,137	1,128
2021	1,263	140
Prior	2,618	2,221
Total	12,300	9,922
Residential Construction
Financing Receivable, Credit Quality Indicator [Line Items]
2025	16,587	23,044
2024	21,524	11,095
2023	2,023
Total	40,134	34,139
Residential Construction | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2025	16,587	23,044
2024	21,524	11,095
2023	1,234
Total	39,345	34,139
Residential Construction | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2024	0
2023	789
Total	789
Commercial Real Estate
Financing Receivable, Credit Quality Indicator [Line Items]
2025	19,033	50,394
2024	57,703	47,231
2023	42,936	40,122
2022	34,615	11,240
2021	10,819	18,086
Prior	75,449	73,990
Revolving Lines	17,620
Total	258,175	241,063
Commercial Real Estate | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2025	18,958	50,394
2024	57,703	47,231
2023	42,936	40,122
2022	34,615	11,240
2021	10,819	17,629
Prior	75,015	73,990
Revolving Lines	17,620
Total	257,666	240,606
Commercial Real Estate | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2025	75
2024	0
Total	75
Commercial Real Estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2021		457
Prior	434
Total	434	457
Other Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
2025	17,837	39,571
2024	20,766	4,306
2023	3,807	7,757
2022	6,443	8,062
2021	7,558	5,500
Prior	12,674	5,565
Revolving Lines	20,266	24,220
Total	89,351	94,981
Other Commercial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2025	17,812	39,529
2024	20,633	4,011
2023	3,486	6,107
2022	4,678	8,062
2021	7,427	5,041
Prior	10,767	4,138
Revolving Lines	19,563	23,556
Total	84,366	90,444
Other Commercial | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2024	33
2023		1,424
2022	61
2021	41
Prior	241	188
Revolving Lines	392
Total	768	1,612
Other Commercial | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2025		42
2024	100	250
2023	321	226
2022	1,704	1,239
2021	90	459
Prior	1,666
Revolving Lines	265	566
Total	4,146	2,782
Other Commercial | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
2025	25
2024	0	45
2023	0
Revolving Lines	46	98
Total	71	143
Home Equity
Financing Receivable, Credit Quality Indicator [Line Items]
2025	1,626	4,592
2024	4,153	7,597
2023	6,884	1,689
2022	1,396	73
2021	51	62
Prior	780	1,022
Revolving Lines	96,557	91,515
Total	111,447	106,550
Home Equity | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2025	1,383	4,592
2024	4,153	7,597
2023	6,884	1,643
2022	1,374	73
2021	51	62
Prior	780	1,020
Revolving Lines	94,038	89,267
Total	108,663	104,254
Home Equity | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2025	157
Total	157
Home Equity | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2025	86
2023		46
2022	22
Prior	0	2
Revolving Lines	2,519	2,225
Total	2,627	2,273
Home Equity | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving Lines		23
Total		23
Other Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
2025	8,174	10,472
2024	5,409	9,724
2023	6,485	3,638
2022	1,743	1,060
2021	779	507
Prior	356	7
Revolving Lines	1,063	1,282
Total	24,009	26,690
Other Consumer | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2025	8,132	10,209
2024	5,369	9,673
2023	6,485	3,628
2022	1,743	1,045
2021	733	507
Prior	356	7
Revolving Lines	1,012	1,235
Total	23,830	26,304
Other Consumer | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2025	32	189
2024	5
Revolving Lines	1
Total	38	189
Other Consumer | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2024	35	15
2022	0	1
2021	46
Revolving Lines		47
Total	81	63
Other Consumer | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
2025	10	74
2024	0	36
2023	0	10
2022		14
Revolving Lines	50
Total	$ 60	$ 134