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

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The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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Amount of writeoff of financing receivable, charged against allowance for credit loss.

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Amount of credit loss expense (reversal of expense) for financing receivable.

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Amortized cost of financing receivable individually evaluated for impairment.

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Loans Held for Investment and Loans Held for Investment at Fair Value - Activity in Allowance for loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Allowance for credit losses:
Beginning balance				$ 4,262				$ 5,845	$ 4,262	$ 5,845
Provision for loan losses	$ (437)	$ 580	$ 279	730	$ 377	$ 228	$ (1,000)	105	1,152	(292)	$ 5,068
Charge-offs									(521)	(1,291)
Ending balance	4,893				4,262				4,893	4,262	5,845
Allowance for Loans Individually Evaluated	1,096				1,406				1,096	1,406
Allowance related to Loans collectively evaluated	3,797				2,856				3,797	2,856
Amortized cost related to Loans individually evaluated	295,339				276,418				295,339	276,418
Amortized cost related to Loans collectively evaluated	2,981,945				2,255,408				2,981,945	2,255,408
Commercial - Purchase
Allowance for credit losses:
Beginning balance				385				373	385	373
Provision for loan losses									401	154
Charge-offs									(147)	(142)
Ending balance	639				385				639	385	373
Allowance for Loans Individually Evaluated	28				9				28	9
Allowance related to Loans collectively evaluated	611				376				611	376
Amortized cost related to Loans individually evaluated	22,571				17,260				22,571	17,260
Amortized cost related to Loans collectively evaluated	678,837				492,161				678,837	492,161
Commercial - Refinance
Allowance for credit losses:
Beginning balance				2,144				2,093	2,144	2,093
Provision for loan losses									(88)	164
Charge-offs									(25)	(113)
Ending balance	2,031				2,144				2,031	2,144	2,093
Allowance for Loans Individually Evaluated	517				826				517	826
Allowance related to Loans collectively evaluated	1,514				1,318				1,514	1,318
Amortized cost related to Loans individually evaluated	87,133				85,935				87,133	85,935
Amortized cost related to Loans collectively evaluated	819,964				697,326				819,964	697,326
Residential 1-4 Unit - Purchase
Allowance for credit losses:
Beginning balance				400				333	400	333
Provision for loan losses									149	104
Charge-offs									(7)	(37)
Ending balance	542				400				542	400	333
Allowance for Loans Individually Evaluated	118				96				118	96
Allowance related to Loans collectively evaluated	424				305				424	305
Amortized cost related to Loans individually evaluated	27,984				17,385				27,984	17,385
Amortized cost related to Loans collectively evaluated	560,449				391,385				560,449	391,385
Residential 1-4 Unit - Refinance
Allowance for credit losses:
Beginning balance				948				1,216	948	1,216
Provision for loan losses									429	(60)
Charge-offs									(105)	(208)
Ending balance	1,272				948				1,272	948	1,216
Allowance for Loans Individually Evaluated	175				138				175	138
Allowance related to Loans collectively evaluated	1,097				811				1,097	811
Amortized cost related to Loans individually evaluated	113,909				107,552				113,909	107,552
Amortized cost related to Loans collectively evaluated	825,396				622,768				825,396	622,768
Short Term 1-4 Unit - Purchase
Allowance for credit losses:
Beginning balance				43				595	43	595
Provision for loan losses									(22)	(538)
Charge-offs										(14)
Ending balance	21				43				21	43	595
Allowance for Loans Individually Evaluated					31					31
Allowance related to Loans collectively evaluated	21				10				21	10
Amortized cost related to Loans individually evaluated	8,140				2,986				8,140	2,986
Amortized cost related to Loans collectively evaluated	61,744				26,003				61,744	26,003
Short Term 1-4 Unit - Refinance
Allowance for credit losses:
Beginning balance				$ 342				$ 1,235	342	1,235
Provision for loan losses									283	(116)
Charge-offs									(237)	(777)
Ending balance	388				342				388	342	$ 1,235
Allowance for Loans Individually Evaluated	258				306				258	306
Allowance related to Loans collectively evaluated	130				36				130	36
Amortized cost related to Loans individually evaluated	35,602				45,300				35,602	45,300
Amortized cost related to Loans collectively evaluated	$ 35,555				$ 25,765				$ 35,555	$ 25,765