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Commitments and Contingencies - Repurchase Reserve Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Commitment And Contingencies [Line Items]
Beginning balance	$ 89,553	$ 49,694
Provision charged to (released from) operating expense, net	8,295	36,729	$ (9,293)
Charge-offs	(1,575)	(2,187)
Ending balance	97,947	89,553	49,694
Mortgage Loans [Member]
Commitment And Contingencies [Line Items]
Beginning balance	1,725	2,102
Reserve related to acquisitions		181
Provision charged to (released from) operating expense, net	(323)	(331)
Charge-offs	(204)	(227)
Ending balance	$ 1,198	$ 1,725	$ 2,102

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Commitment And Contingencies [Line Items]

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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 of increase in allowance for credit loss on financing receivable purchased with credit deterioration.

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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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