Segment Information - Summary of Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Segment Reporting Information [Line Items]
Revenues from external customers	$ 340,797	$ 896,756	$ 1,739,552	$ 2,249,764
Gross profit	67,331	58,089	215,328	157,393
Ecommerce
Segment Reporting Information [Line Items]
Revenues from external customers	225,441	701,678	1,222,436	1,703,649
Gross profit	27,034	50,383	94,862	131,859
Wholesale
Segment Reporting Information [Line Items]
Revenues from external customers	47,604	131,306	270,489	377,438
Gross profit	(1,574)	2,103	(6,260)	10,337
Retail Financing
Segment Reporting Information [Line Items]
Revenues from external customers	40,654		120,005
Gross profit	35,954		109,637
All Other
Segment Reporting Information [Line Items]
Revenues from external customers	27,098	63,772	126,622	168,677
Gross profit	$ 5,917	$ 5,603	$ 17,089	$ 15,197