Loan Portfolio - Schedule of Activity In Allowance For Loan Losses (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2024	Mar. 31, 2023
Financing Receivable Allowance For Credit Losses [Line Items]
(Reversal) Provision		$ 70,000	$ 3,200
Current Expected Credit Losses
Financing Receivable Allowance For Credit Losses [Line Items]
Total current expected credit loss reserve, Balance		152,684	146,362
(Reversal) Provision		69,960	(3,239)
Principal charge-off		(42,266)
Total current expected credit loss reserve, Balance		$ 180,378	143,123
Reserve	[1]	2.60%
Current Expected Credit Losses | Specific C E C L Allowance
Financing Receivable Allowance For Credit Losses [Line Items]
Total current expected credit loss reserve, Balance		$ 72,587	60,300
(Reversal) Provision		47,285
Principal charge-off		(42,266)
Total current expected credit loss reserve, Balance		$ 77,606	60,300
Reserve	[1]	1.10%
Current Expected Credit Losses | Loans Receivable Held For Investment
Financing Receivable Allowance For Credit Losses [Line Items]
Total current expected credit loss reserve, Balance		$ 70,371	68,347
(Reversal) Provision		23,358	(1,021)
Total current expected credit loss reserve, Balance		93,729	67,326
Current Expected Credit Losses | Unfunded Loan Commitments
Financing Receivable Allowance For Credit Losses [Line Items]
Total current expected credit loss reserve, Balance	[2]	9,726	17,715
(Reversal) Provision	[2]	(683)	(2,218)
Total current expected credit loss reserve, Balance	[2]	9,043	15,497
Current Expected Credit Losses | General CECL Reserve [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Total current expected credit loss reserve, Balance		80,097	86,062
(Reversal) Provision		22,675	(3,239)
Total current expected credit loss reserve, Balance		$ 102,772	$ 82,823
Reserve	[1]	1.50%

[1] Represents CECL reserve as a percent of total unpaid principal balance of loans receivable held-for-investment as of March 31, 2024.

[2] The CECL reserve for unfunded commitments is included in other liabilities on the consolidated balance sheets.