Variable Interest Entities - Narrative (Details) $ in Thousands			6 Months Ended
		Jul. 06, 2023 USD ($)	Jun. 30, 2024 USD ($) variable_interest_entity	Dec. 31, 2023 USD ($)
Variable Interest Entity [Line Items]
Number of VIEs whom exercised clean up calls | variable_interest_entity			2
Financing receivable, after allowance for credit loss	[1]		$ 820,628	$ 1,156,413
Restricted cash			185,827	99,382
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Restricted cash			3,700	6,000
Variable Interest Entity, Not Primary Beneficiary | Notes receivable and residual certificates (at fair value)
Variable Interest Entity [Line Items]
Financing receivable, after allowance for credit loss			$ 11,600	$ 14,800
Variable Interest Entity, Not Primary Beneficiary | Consolidated securitization
Variable Interest Entity [Line Items]
Unpaid principal balance of loans		$ 204,700
Weighted average coupon yield		9.20%
Net cash proceeds		$ 165,300

[1] Includes $179.1 million and $135.1 million of loans, at fair value, contributed as collateral for the consolidated securitization as of December 31, 2023 and June 30, 2024, respectively. Refer to “Note 6. Fair Value Measurement” for details.