Fair Value Measurements - Rollforward of Loans held for investment and held for sale and Securitized Debt Measured at Estimated Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Loans Held For Investment
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Beginning balance	$ 705,330	$ 1,351	$ 276,095	$ 1,359
Originations	271,633		728,167
Loans liquidated	(22,527)	(12)	(44,012)	(36)
Principal paydowns	(2,479)	(416)	(5,275)	(416)
Total unrealized (loss) gain included in net income	(1,872)	3	7,895	19
Loans transfer (to held for sale) from held for investment			(20,857)
REO Transfer	(362)		(362)
Loans repurchased	2,267		10,339
Ending balance	951,990	926	951,990	926
Loans Held For Sale
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Originations	18,948	16,119	38,036	16,119
Loans liquidated			(39,945)
Total unrealized (loss) gain included in net income	588	450	588	450
Loans transfer (to held for sale) from held for investment			20,857
Ending balance	19,536	16,569	19,536	16,569
Mortgage Servicing Rights
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Beginning balance	9,445	8,438	9,238	7,152
Additions			250
Total unrealized (loss) gain included in net income	341	1,430	298	2,716
Ending balance	$ 9,786	$ 9,868	$ 9,786	$ 9,868

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of gain (loss) recognized in income from derivative asset (liability) after deduction of derivative liability (asset), measured at fair value on recurring basis using unobservable input (level 3).

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Amount of sales of financial instrument classified as a derivative asset (liability) after deduction of derivative liability (asset), measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Amount of settlements of financial instrument classified as a derivative asset (liability) after deduction of derivative liability, measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Amount of transfers of financial instrument classified as a derivative asset (liability) after deduction of derivative liability (asset) into (out of) level 3 of the fair value hierarchy.

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