CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Operating activities
Net loss	$ (141,362)	$ (425,548)
Adjustments to reconcile net loss to net cash used in operating activities:
Impairment charges	1,353	205,110
Gain on debt extinguishment	(19,640)
Depreciation and amortization	21,173	18,010
Amortization of debt issuance costs	2,248	2,523
Realized gains on securitization transactions		(29,617)
Deferred taxes		(23,855)
Losses on finance receivables and securitization debt, net	42,532	29,457
Stock-based compensation expense	4,357	5,405
Provision to record inventory at lower of cost or net realizable value	(11,811)	(2,006)
Provision for bad debt	529	11,119
Provision to record finance receivables held for sale at lower of cost or fair value	1,651	1,986
Amortization of unearned discounts on finance receivables at fair value	(13,414)	(8,788)
Other, net	(7,579)	(851)
Changes in operating assets and liabilities:
Originations of finance receivables held for sale	(274,707)	(319,314)
Principal payments received on finance receivables held for sale	42,862	23,179
Proceeds from sale of finance receivables held for sale, net		271,820
Other	505	(4,011)
Accounts receivable	3,873	34,192
Inventory	123,588	192,618
Prepaid expenses and other current assets	16,611	13,513
Other assets	1,213	(1,670)
Accounts payable	(5,357)	(15,352)
Accrued expenses	(19,042)	(23,832)
Deferred revenue	6,062	(58,003)
Other liabilities	(7,770)	(33,604)
Net cash used in operating activities	(232,125)	(137,519)
Investing activities
Purchases of finance receivables at fair value	(3,392)	(49,475)
Principal payments received on finance receivables at fair value	91,892	74,690
Proceeds from sale of finance receivables at fair value, net		29,026
Consolidation of VIEs	11,409
Principal payments received on beneficial interests	3,306	2,720
Purchase of property and equipment	(8,521)	(16,046)
Acquisition of business, net of cash acquired		(267,488)
Net cash provided by (used in) investing activities	94,694	(226,573)
Financing activities
Proceeds from borrowings under secured financing agreements	261,991
Principal repayment under secured financing agreements	(103,980)	(105,563)
Proceeds from financing of beneficial interests in securitizations	24,506
Principal repayments of financing of beneficial interests in securitizations	(2,304)
Proceeds from vehicle floorplan	182,734	1,074,184
Repayments of vehicle floorplan	(327,242)	(1,164,533)
Proceeds from warehouse credit facilities	211,400	261,700
Repayments of warehouse credit facilities	(263,216)	(228,744)
Repurchases of convertible senior notes	(13,194)
Other financing activities	(1,043)	(1,344)
Net cash used in financing activities	(30,348)	(164,300)
Net decrease in cash, cash equivalents and restricted cash	(167,779)	(528,392)
Cash, cash equivalents and restricted cash at the beginning of period	472,010	1,214,775
Cash, cash equivalents and restricted cash at the end of period	304,231	686,383
Supplemental disclosure of cash flow information:
Cash paid for interest	25,983	16,299
Cash paid for income taxes	3,682	2,062
Supplemental disclosure of non-cash investing and financing activities:
Finance receivables from consolidation of 2022-2 securitization transaction	180,706
Elimination of beneficial interest from the consolidation of 2022-2 securitization transaction	9,811
Securitization debt from consolidation of 2022-2 securitization transaction	186,386
Reclassification of finance receivables held for sale to finance receivables at fair value, net	$ 248,081
Fair value of beneficial interests received in securitization transactions		$ 16,473