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Commitments and Contingencies - Repurchase Reserve Activity (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Commitment and Contingencies
Beginning balance	$ 88,893	$ 96,457	$ 94,455	$ 97,947	$ 97,947
Provision released from operating expense, net			8,700	4,776
Charge-offs	(1,617)	(3,505)	(18,026)	(8,387)	(10,778)
Ending balance	88,280	95,047	88,280	95,047	94,455
Mortgage loans
Commitment and Contingencies
Beginning balance	724	1,089	1,000	1,198	1,198
Provision released from operating expense, net	(50)		(260)	(73)
Charge-offs	(51)	(20)	(117)	(56)
Ending balance	$ 623	$ 1,069	$ 623	$ 1,069	$ 1,000

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Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

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Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. Excludes net investment in lease.

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Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.

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