Variable Interest Entities and Securitizations - Summary of Total Assets and Total Liabilities Associated With Variable Interests in Consolidated VIEs (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current Assets:
Restricted cash	$ 153,741	$ 82,450
Finance receivables at fair value, current	14,461
Finance receivables held for sale, net	295,303
Total current assets	1,666,903	2,102,292
Finance receivables at fair value, noncurrent	213,323
Total assets	2,142,299	2,366,750
Current Liabilities:
Current portion of securitization debt	115,325
Warehouse credit facilities	210,577
Total current liabilities	946,112	827,256
Securitization debt, net of current portion	674,331	610,618
Other liabilities	18,458	4,090
Total liabilities	1,647,248	1,451,556
Securitization Vehicles
Current Assets:
Restricted cash	20,492
Finance receivables at fair value, current	12,004
Other assets	1,882
Total current assets	34,378
Finance receivables at fair value, noncurrent	147,374
Total assets	181,752
Current Liabilities:
Current portion of securitization debt	115,325
Total current liabilities	115,325
Securitization debt, net of current portion	51,790
Other liabilities	239
Total liabilities	167,354
Warehouse Facilities
Current Assets:
Restricted cash	13,032
Finance receivables at fair value, current	1,610
Finance receivables held for sale, net	253,068
Other assets	757
Total current assets	268,467
Finance receivables at fair value, noncurrent	17,203
Total assets	285,670
Current Liabilities:
Warehouse credit facilities	210,577
Total current liabilities	210,577
Other liabilities	533
Total liabilities	211,110
Consolidated VIEs
Current Assets:
Restricted cash	33,524	0
Finance receivables at fair value, current	13,614	0
Finance receivables held for sale, net	253,068	0
Other assets	2,639
Total current assets	302,845
Finance receivables at fair value, noncurrent	164,577	$ 0
Total assets	467,422
Current Liabilities:
Current portion of securitization debt	115,325
Warehouse credit facilities	210,577
Total current liabilities	325,902
Securitization debt, net of current portion	51,790
Other liabilities	772
Total liabilities	$ 378,464