Loans Held for Investment and Loans Held for Investment at Fair Value - Schedule of Activity in Allowance for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Allowance for credit losses:
Beginning balance	$ 4,893	$ 4,262
Provision for loan losses	636	730
Charge-offs	(484)	(328)
Ending balance	5,045	4,664
Allowance for Loans Individually Evaluated	996	1,599	$ 1,096
Allowance related to Loans collectively evaluated	4,049	3,064
Amortized cost related to Loans individually evaluated	309,714	278,803
Amortized cost related to Loans collectively evaluated	2,864,611	2,554,163
Commercial - Purchase
Allowance for credit losses:
Beginning balance	639	385
Provision for loan losses	157	281
Charge-offs		(147)
Ending balance	796	519
Allowance for Loans Individually Evaluated	138	28	28
Allowance related to Loans collectively evaluated	659	490
Amortized cost related to Loans individually evaluated	19,422	16,712
Amortized cost related to Loans collectively evaluated	661,629	592,520
Commercial - Refinance
Allowance for credit losses:
Beginning balance	2,031	2,144
Provision for loan losses	108	1
Charge-offs	(79)	(5)
Ending balance	2,060	2,140
Allowance for Loans Individually Evaluated	416	770	517
Allowance related to Loans collectively evaluated	1,644	1,370
Amortized cost related to Loans individually evaluated	87,439	83,695
Amortized cost related to Loans collectively evaluated	792,539	806,134
Residential 1-4 Unit - Purchase
Allowance for credit losses:
Beginning balance	542	400
Provision for loan losses	(48)	11
Charge-offs	(26)
Ending balance	468	389
Allowance for Loans Individually Evaluated		96	118
Allowance related to Loans collectively evaluated	467	293
Amortized cost related to Loans individually evaluated	34,171	24,934
Amortized cost related to Loans collectively evaluated	540,149	423,793
Residential 1-4 Unit - Refinance
Allowance for credit losses:
Beginning balance	1,272	948
Provision for loan losses	102	186
Charge-offs	(11)	(105)
Ending balance	1,363	1,029
Allowance for Loans Individually Evaluated	204	198	175
Allowance related to Loans collectively evaluated	1,159	832
Amortized cost related to Loans individually evaluated	124,390	107,362
Amortized cost related to Loans collectively evaluated	787,923	674,743
Short Term 1-4 Unit - Purchase
Allowance for credit losses:
Beginning balance	21	43
Provision for loan losses	66	7
Charge-offs	(63)
Ending balance	24	50
Allowance for Loans Individually Evaluated		32
Allowance related to Loans collectively evaluated	24	17
Amortized cost related to Loans individually evaluated	8,447	2,869
Amortized cost related to Loans collectively evaluated	53,945	35,814
Short Term 1-4 Unit - Refinance
Allowance for credit losses:
Beginning balance	388	342
Provision for loan losses	251	266
Charge-offs	(305)	(71)
Ending balance	334	537
Allowance for Loans Individually Evaluated	238	475	$ 258
Allowance related to Loans collectively evaluated	96	62
Amortized cost related to Loans individually evaluated	35,845	43,231
Amortized cost related to Loans collectively evaluated	$ 28,426	$ 21,159

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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