Merger - Schedule of Reverse Recapitalization (Details) - USD ($) $ in Thousands		3 Months Ended
	Jan. 21, 2021	Mar. 31, 2022	Mar. 31, 2021
Reverse Recapitalization [Abstract]
Cash - Acamar Partners’ trust and cash	$ 309,999
Cash - PIPE	125,000	$ 0	$ 125,000
Less: consideration delivered to existing shareholders of Former CarLotz	(62,693)	0	(62,693)
Less: consideration to pay accrued dividends	(4,853)
Less: transaction costs and advisory fees paid	(47,579)	$ 0	$ (47,579)
Less: payments on cash considerations associated with stock options	(2,465)
Net contributions from Merger and PIPE financing	317,409
Liabilities relieved: preferred stock obligation	2,832
Liabilities relieved: KAR/AFC note payable	3,625
Liabilities relieved: historic warrant liability	144
Less: earnout shares liability	(74,285)
Less: Merger warrants liability	$ (39,024)