Acquisition - Summary of Fair Value of Identified Assets Acquired and Liabilities Assumed (Details) - USD ($)	Dec. 31, 2023	Dec. 31, 2022	Feb. 01, 2022	Dec. 31, 2021
Business Acquisition [Line Items]
Goodwill	$ 0	$ 0		$ 158,817,000
UACC
Business Acquisition [Line Items]
Cash and cash equivalents			$ 5,294,000
Restricted cash			42,631,000
Finance receivables at fair value			296,927,000
Finance receivables, held for sale			263,393,000
Intangible Assets			156,000,000
Goodwill			42,886,000
Other assets			25,934,000
Total assets acquired			833,065,000
Warehouse credit facilities			(178,067,000)
Long term debt			(285,704,000)
Deferred tax liability			(23,855,000)
Other liabilities			(30,026,000)
Total liabilities assumed			(517,652,000)
Net assets acquired			$ 315,413,000