Loans Held for Investment - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Receivables [Abstract]
Loans renegotiated in troubled debt restructurings	$ 64,600,000	$ 6,200,000
Loans renegotiated in troubled debt restructurings, non-accrual loans	4,200,000	3,900,000
Loans renegotiated in troubled debt restructurings, accrual loans	60,400,000	2,300,000
Accounts and Financing Receivable, after Allowance for Credit Loss, Noncurrent	1,100,000
Financing Receivable, Troubled Debt Restructuring, Commitment to Lend	0
Financing Receivable, Allowance for Credit Loss, Noncurrent	100,000
Financing Receivable, Troubled Debt Restructuring, Postmodification	71,700,000
Charge-offs directly related to modified loans	5,700,000	$ 0	$ 0
Balance of notes for which there was a payment default	0
Impaired Financing Receivable, Recorded Investment	$ 743,300,000