Loans Held for Investment at Amortized Cost and Loans Held for Investment at Fair Value - Schedule of Amortized Cost in Loans Held for Investment based on Accrual Status and by Loan Origination Year (Details) - Accrual Status - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2026	Dec. 31, 2025	Dec. 31, 2025
Financing Receivable Recorded Investment [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	$ 750,577	$ 778,659	$ 778,659
Term Loans Amortized Cost Basis by Origination Year, 2021	693,247	716,452	716,452
Term Loans Amortized Cost Basis by Origination Year, 2020	103,862	108,585	108,585
Term Loans Amortized Cost Basis by Origination Year, 2019	184,998	190,496	190,496
Term Loans Amortized Cost Basis by Origination Year, Prior	223,206	238,591	238,591
Total, gross	1,955,890	2,032,783	2,032,783
Term Loans Amortized Cost Basis by Origination Year, 2022, Gross Charge-offs	554	1,321	4,120
Term Loans Amortized Cost Basis by Origination Year, 2021, Gross Charge-offs	364	422	751
Term Loans Amortized Cost Basis by Origination Year, 2020, Gross Charge-offs			45
Term Loans Amortized Cost Basis by Origination Year, 2019, Gross Charge-offs	110		75
Term Loans Amortized Cost Basis by Origination Year, Prior, Gross Charge-offs	294	276	467
Gross Charge-offs, Total	1,322	2,019	5,458
Commercial - Purchase
Financing Receivable Recorded Investment [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	199,195	205,646	205,646
Term Loans Amortized Cost Basis by Origination Year, 2021	190,504	195,552	195,552
Term Loans Amortized Cost Basis by Origination Year, 2020	24,711	25,390	25,390
Term Loans Amortized Cost Basis by Origination Year, 2019	30,063	30,246	30,246
Term Loans Amortized Cost Basis by Origination Year, Prior	29,784	32,901	32,901
Total, gross	474,257	489,735	489,735
Commercial - Purchase \| Performing
Financing Receivable Recorded Investment [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	185,110	195,654	195,654
Term Loans Amortized Cost Basis by Origination Year, 2021	178,266	183,471	183,471
Term Loans Amortized Cost Basis by Origination Year, 2020	22,237	22,409	22,409
Term Loans Amortized Cost Basis by Origination Year, 2019	25,896	26,427	26,427
Term Loans Amortized Cost Basis by Origination Year, Prior	27,616	31,345	31,345
Total, gross	439,125	459,306	459,306
Commercial - Purchase \| Nonperforming
Financing Receivable Recorded Investment [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	14,085	9,992	9,992
Term Loans Amortized Cost Basis by Origination Year, 2021	12,238	12,081	12,081
Term Loans Amortized Cost Basis by Origination Year, 2020	2,474	2,981	2,981
Term Loans Amortized Cost Basis by Origination Year, 2019	4,167	3,819	3,819
Term Loans Amortized Cost Basis by Origination Year, Prior	2,168	1,556	1,556
Total, gross	35,132	30,429	30,429
Commercial - Refinance
Financing Receivable Recorded Investment [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	195,862	202,862	202,862
Term Loans Amortized Cost Basis by Origination Year, 2021	162,191	167,417	167,417
Term Loans Amortized Cost Basis by Origination Year, 2020	34,709	36,331	36,331
Term Loans Amortized Cost Basis by Origination Year, 2019	76,264	79,603	79,603
Term Loans Amortized Cost Basis by Origination Year, Prior	115,126	123,062	123,062
Total, gross	584,152	609,275	609,275
Commercial - Refinance \| Performing
Financing Receivable Recorded Investment [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	176,934	184,326	184,326
Term Loans Amortized Cost Basis by Origination Year, 2021	148,603	152,510	152,510
Term Loans Amortized Cost Basis by Origination Year, 2020	29,969	32,023	32,023
Term Loans Amortized Cost Basis by Origination Year, 2019	62,006	64,788	64,788
Term Loans Amortized Cost Basis by Origination Year, Prior	94,461	101,230	101,230
Total, gross	511,973	534,877	534,877
Commercial - Refinance \| Nonperforming
Financing Receivable Recorded Investment [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	18,928	18,536	18,536
Term Loans Amortized Cost Basis by Origination Year, 2021	13,588	14,907	14,907
Term Loans Amortized Cost Basis by Origination Year, 2020	4,740	4,308	4,308
Term Loans Amortized Cost Basis by Origination Year, 2019	14,258	14,815	14,815
Term Loans Amortized Cost Basis by Origination Year, Prior	20,665	21,832	21,832
Total, gross	72,179	74,398	74,398
Residential 1-4 Unit - Purchase
Financing Receivable Recorded Investment [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	148,722	154,595	154,595
Term Loans Amortized Cost Basis by Origination Year, 2021	148,616	153,828	153,828
Term Loans Amortized Cost Basis by Origination Year, 2020	5,200	6,108	6,108
Term Loans Amortized Cost Basis by Origination Year, 2019	14,558	14,640	14,640
Term Loans Amortized Cost Basis by Origination Year, Prior	22,581	23,047	23,047
Total, gross	339,677	352,218	352,218
Residential 1-4 Unit - Purchase \| Performing
Financing Receivable Recorded Investment [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	140,452	144,277	144,277
Term Loans Amortized Cost Basis by Origination Year, 2021	137,354	142,870	142,870
Term Loans Amortized Cost Basis by Origination Year, 2020	4,809	4,718	4,718
Term Loans Amortized Cost Basis by Origination Year, 2019	13,770	13,852	13,852
Term Loans Amortized Cost Basis by Origination Year, Prior	18,256	19,118	19,118
Total, gross	314,641	324,835	324,835
Residential 1-4 Unit - Purchase \| Nonperforming
Financing Receivable Recorded Investment [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	8,270	10,318	10,318
Term Loans Amortized Cost Basis by Origination Year, 2021	11,262	10,958	10,958
Term Loans Amortized Cost Basis by Origination Year, 2020	391	1,390	1,390
Term Loans Amortized Cost Basis by Origination Year, 2019	788	788	788
Term Loans Amortized Cost Basis by Origination Year, Prior	4,325	3,929	3,929
Total, gross	25,036	27,383	27,383
Residential 1-4 Unit - Refinance
Financing Receivable Recorded Investment [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	200,745	209,495	209,495
Term Loans Amortized Cost Basis by Origination Year, 2021	191,936	199,655	199,655
Term Loans Amortized Cost Basis by Origination Year, 2020	14,465	16,425	16,425
Term Loans Amortized Cost Basis by Origination Year, 2019	47,811	50,083	50,083
Term Loans Amortized Cost Basis by Origination Year, Prior	54,129	57,235	57,235
Total, gross	509,086	532,893	532,893
Residential 1-4 Unit - Refinance \| Performing
Financing Receivable Recorded Investment [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	169,546	182,214	182,214
Term Loans Amortized Cost Basis by Origination Year, 2021	158,776	165,344	165,344
Term Loans Amortized Cost Basis by Origination Year, 2020	12,838	13,247	13,247
Term Loans Amortized Cost Basis by Origination Year, 2019	36,399	38,741	38,741
Term Loans Amortized Cost Basis by Origination Year, Prior	40,656	42,681	42,681
Total, gross	418,215	442,227	442,227
Residential 1-4 Unit - Refinance \| Nonperforming
Financing Receivable Recorded Investment [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	31,199	27,281	27,281
Term Loans Amortized Cost Basis by Origination Year, 2021	33,160	34,311	34,311
Term Loans Amortized Cost Basis by Origination Year, 2020	1,627	3,178	3,178
Term Loans Amortized Cost Basis by Origination Year, 2019	11,412	11,342	11,342
Term Loans Amortized Cost Basis by Origination Year, Prior	13,473	14,554	14,554
Total, gross	90,871	90,666	90,666
Short Term 1-4 Unit - Purchase
Financing Receivable Recorded Investment [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	597	597	597
Term Loans Amortized Cost Basis by Origination Year, 2020	23,255	22,487	22,487
Term Loans Amortized Cost Basis by Origination Year, 2019	8,051	7,694	7,694
Total, gross	31,903	30,778	30,778
Short Term 1-4 Unit - Purchase \| Performing
Financing Receivable Recorded Investment [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2020	22,672	21,904	21,904
Term Loans Amortized Cost Basis by Origination Year, 2019	8,051	7,694	7,694
Total, gross	30,723	29,598	29,598
Short Term 1-4 Unit - Purchase \| Nonperforming
Financing Receivable Recorded Investment [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	597	597	597
Term Loans Amortized Cost Basis by Origination Year, 2020	583	583	583
Total, gross	1,180	1,180	1,180
Short Term 1-4 Unit - Refinance
Financing Receivable Recorded Investment [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	5,456	5,464	5,464
Term Loans Amortized Cost Basis by Origination Year, 2020	1,522	1,844	1,844
Term Loans Amortized Cost Basis by Origination Year, 2019	8,251	8,230	8,230
Term Loans Amortized Cost Basis by Origination Year, Prior	1,586	2,346	2,346
Total, gross	16,815	17,884	17,884
Short Term 1-4 Unit - Refinance \| Performing
Financing Receivable Recorded Investment [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022		4,548	4,548
Total, gross		4,548	4,548
Short Term 1-4 Unit - Refinance \| Nonperforming
Financing Receivable Recorded Investment [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	5,456	916	916
Term Loans Amortized Cost Basis by Origination Year, 2020	1,522	1,844	1,844
Term Loans Amortized Cost Basis by Origination Year, 2019	8,251	8,230	8,230
Term Loans Amortized Cost Basis by Origination Year, Prior	1,586	2,346	2,346
Total, gross	$ 16,815	$ 13,336	$ 13,336

Loans Held for Investment at Amortized Cost and Loans Held for Investment at Fair Value - Schedule of Amortized Cost in Loans Held for Investment based on Accrual Status and by Loan Origination Year (Details) - Accrual Status - USD ($)
$ in Thousands

3 Months Ended

12 Months Ended

Mar. 31, 2026

Dec. 31, 2025

Financing Receivable Recorded Investment [Line Items]

Term Loans Amortized Cost Basis by Origination Year, 2022

$ 750,577

$ 778,659

Term Loans Amortized Cost Basis by Origination Year, 2021

693,247

716,452

Term Loans Amortized Cost Basis by Origination Year, 2020