Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Cash Flows from Operating Activities:
Net loss subsequent to Organizational Transactions	$ (168,341)	$ (117,078)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization expense	16,301	7,746
Loss on disposal of property and equipment	542	882
Provision for bad debt and finance receivable allowance	1,375	805
Gain on loan sales	(35,655)	(14,982)
Equity-based compensation expense	17,981	3,989
Amortization and write-off of debt issuance costs	1,055	1,407
Originations of finance receivables	(872,382)	(361,265)
Proceeds from sale of finance receivables	1,114,304	361,659
Payments to Acquire Finance Receivables	(253,041)	0
Changes in assets and liabilities:
Accounts receivable	(9,434)	(6,159)
Vehicle inventory	(110,312)	(5,962)
Other current assets	(11,879)	(1,206)
Other assets	(420)	(1,722)
Accounts payable and accrued liabilities	44,827	8,694
Accounts payable to related party	1,710	258
Other liabilities	(506)	6,920
Net cash used in operating activities	(263,875)	(116,014)
Cash Flows from Investing Activities:
Purchases of property and equipment	(107,228)	(59,408)
Payments to Acquire Businesses, Gross	(6,670)	0
Net cash used in investing activities	(113,898)	(59,408)
Cash Flows from Financing Activities:
Proceeds from floor plan facility	1,297,419	674,411
Payments on floor plan facility	(1,196,819)	(644,641)
Proceeds from issuance of senior unsecured notes	350,000	0
Proceeds from Verde Credit Facility	0	35,000
Payments on Verde Credit Facility	0	(35,000)
Proceeds from long-term debt	46,179	7,596
Payments on long-term debt	(8,817)	(1,137)
Payments of debt issuance costs, including $0 and $1,000 to related parties, respectively	(6,309)	(1,000)
Net proceeds from issuance of Class A common stock	172,287	206,323
Proceeds from exercise of stock options	642	28
Tax withholdings related to restricted stock awards	(1,376)	(399)
Dividends paid on Class A Convertible Preferred Stock	(4,279)	0
Net cash provided by financing activities	648,915	241,181
Net increase in cash, cash equivalents and restricted cash	271,142	65,759
Cash, cash equivalents and restricted cash at beginning of period	187,123	49,450
Cash, cash equivalents and restricted cash at end of period	458,265	115,209
Class A Convertible Preferred Stock
Cash Flows from Financing Activities:
Dividends paid on Class A Convertible Preferred Stock	(4,300)
Payments of costs related to issuance of Class A Convertible Preferred Stock	$ (12)	$ 0