Condensed Consolidated Statements Stockholders’ Equity (Deficit) - USD ($) $ in Thousands | Total | Previously Reported | Revision of Prior Period, Adjustment | Common Stock | Common StockPreviously Reported | Common StockRevision of Prior Period, Adjustment | Additional Paid-in Capital | Additional Paid-in CapitalPreviously Reported | Additional Paid-in CapitalRevision of Prior Period, Adjustment | Accumulated Deficit | Accumulated DeficitPreviously Reported | Accumulated DeficitRevision of Prior Period, Adjustment | Accumulated Other Comprehensive Income (Loss) | Accumulated Other Comprehensive Income (Loss)Previously Reported | Accumulated Other Comprehensive Income (Loss)Revision of Prior Period, Adjustment |
Beginning balance (in shares) at Dec. 31, 2019 | 0 | 2,034,751 | (2,034,751) | | | | | | | | | | | | |
Beginning balance at Dec. 31, 2019 | $ 0 | $ 17,560 | $ (17,560) | | | | | | | | | | | | |
Ending balance (in shares) at Mar. 31, 2020 | 0 | | | | | | | | | | | | | | |
Ending balance at Mar. 31, 2020 | $ 0 | | | | | | | | | | | | | | |
Beginning balance (in shares) at Dec. 31, 2019 | | | | 58,621,042 | 37,881,435 | 20,739,607 | | | | | | | | | |
Beginning balance at Dec. 31, 2019 | (4,861) | $ (22,421) | $ 17,560 | $ 6 | $ 4 | $ 2 | $ 22,618 | $ 5,060 | $ 17,558 | | $ (27,485) | | $ (27,485) | | $ 0 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | | | | | | | | | |
Net loss | (1,507) | | | | | | | | | $ (1,507) | | | | | |
Accrued dividends on redeemable convertible preferred stock | (456) | | | | | | (456) | | | | | | | | |
Redeemable convertible preferred stock issuance | 4 | | | | | | | | | | | | 4 | | |
Stock-based compensation | 34 | | | | | | 34 | | | | | | | | |
Ending balance (in shares) at Mar. 31, 2020 | | | | 58,621,042 | | | | | | | | | | | |
Ending balance at Mar. 31, 2020 | $ (6,786) | | | $ 6 | | | 22,196 | | | (28,992) | | | 4 | | |
Beginning balance (in shares) at Dec. 31, 2019 | 0 | 2,034,751 | (2,034,751) | | | | | | | | | | | | |
Beginning balance at Dec. 31, 2019 | $ 0 | $ 17,560 | $ (17,560) | | | | | | | | | | | | |
Ending balance (in shares) at Sep. 30, 2020 | 0 | | | | | | | | | | | | | | |
Ending balance at Sep. 30, 2020 | $ 0 | | | | | | | | | | | | | | |
Beginning balance (in shares) at Dec. 31, 2019 | | | | 58,621,042 | 37,881,435 | 20,739,607 | | | | | | | | | |
Beginning balance at Dec. 31, 2019 | (4,861) | $ (22,421) | $ 17,560 | $ 6 | $ 4 | $ 2 | 22,618 | 5,060 | 17,558 | | (27,485) | | (27,485) | | 0 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | | | | | | | | | |
Net loss | (2,212) | | | | | | | | | | | | | | |
Other comprehensive income, net of tax | 16 | | | | | | | | | | | | | | |
Ending balance (in shares) at Sep. 30, 2020 | | | | 58,621,042 | | | | | | | | | | | |
Ending balance at Sep. 30, 2020 | $ (8,419) | | | $ 6 | | | 21,256 | | | (29,697) | | | 16 | | |
Beginning balance (in shares) at Mar. 31, 2020 | 0 | | | | | | | | | | | | | | |
Beginning balance at Mar. 31, 2020 | $ 0 | | | | | | | | | | | | | | |
Ending balance (in shares) at Jun. 30, 2020 | 0 | | | | | | | | | | | | | | |
Ending balance at Jun. 30, 2020 | $ 0 | | | | | | | | | | | | | | |
Beginning balance (in shares) at Mar. 31, 2020 | | | | 58,621,042 | | | | | | | | | | | |
Beginning balance at Mar. 31, 2020 | (6,786) | | | $ 6 | | | 22,196 | | | (28,992) | | | 4 | | |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | | | | | | | | | |
Net loss | (213) | | | | | | | | | (213) | | | | | |
Other comprehensive income, net of tax | 7 | | | | | | | | | | | | 7 | | |
Accrued dividends on redeemable convertible preferred stock | (466) | | | | | | (466) | | | | | | | | |
Stock-based compensation | 3 | | | | | | 3 | | | | | | | | |
Ending balance (in shares) at Jun. 30, 2020 | | | | 58,621,042 | | | | | | | | | | | |
Ending balance at Jun. 30, 2020 | $ (7,455) | | | $ 6 | | | 21,733 | | | (29,205) | | | 11 | | |
Ending balance (in shares) at Sep. 30, 2020 | 0 | | | | | | | | | | | | | | |
Ending balance at Sep. 30, 2020 | $ 0 | | | | | | | | | | | | | | |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | | | | | | | | | |
Net loss | (492) | | | | | | | | | (492) | | | | | |
Other comprehensive income, net of tax | 5 | | | | | | | | | | | | 5 | | |
Accrued dividends on redeemable convertible preferred stock | (477) | | | | | | (477) | | | | | | | | |
Ending balance (in shares) at Sep. 30, 2020 | | | | 58,621,042 | | | | | | | | | | | |
Ending balance at Sep. 30, 2020 | $ (8,419) | | | $ 6 | | | 21,256 | | | (29,697) | | | 16 | | |
Beginning balance (in shares) at Dec. 31, 2020 | 0 | 2,034,751 | (2,034,751) | | | | | | | | | | | | |
Beginning balance at Dec. 31, 2020 | $ 0 | $ 17,560 | $ (17,560) | | | | | | | | | | | | |
Ending balance (in shares) at Mar. 31, 2021 | 0 | | | | | | | | | | | | | | |
Ending balance at Mar. 31, 2021 | $ 0 | | | | | | | | | | | | | | |
Beginning balance (in shares) at Dec. 31, 2020 | 58,621,042 | | | 58,621,042 | 37,881,435 | 20,739,607 | | | | | | | | | |
Beginning balance at Dec. 31, 2020 | $ (13,237) | $ (30,797) | $ 17,560 | $ 6 | $ 4 | $ 2 | 20,779 | 3,221 | 17,558 | (34,037) | (34,037) | $ 0 | 15 | $ 15 | 0 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | | | | | | | | | |
Net loss | (15,022) | | | | | | | | | (15,022) | | | | | |
Other comprehensive income, net of tax | (131) | | | | | | | | | | | | (131) | | |
Accrued dividends on redeemable convertible preferred stock | (19) | | | | | | (19) | | | | | | | | |
PIPE issuance (in shares) | | | | 12,500,000 | | | | | | | | | | | |
PIPE issuance | 125,000 | | | $ 1 | | | 124,999 | | | | | | | | |
Merger financing (in shares) | | | | 38,194,390 | | | | | | | | | | | |
Merger financing | 309,999 | | | $ 4 | | | 309,995 | | | | | | | | |
Consideration to existing shareholders of Former CarLotz, net of accrued dividends | (62,693) | | | | | | (62,693) | | | | | | | | |
Transaction costs and advisory fees | (47,579) | | | | | | (47,579) | | | | | | | | |
Settlement of redeemable convertible preferred stock tranche obligation | 2,832 | | | | | | 2,832 | | | | | | | | |
Cashless exercise of options (in shares) | | | | 54,717 | | | | | | | | | | | |
Cash consideration paid to Former Carlotz optionholders | (2,465) | | | | | | (2,465) | | | | | | | | |
Stock-based compensation | 41,963 | | | | | | 41,963 | | | | | | | | |
Earnout liability | (74,284) | | | | | | (74,284) | | | | | | | | |
Merger warrants liability | (39,025) | | | | | | (39,025) | | | | | | | | |
KAR/AFC warrant exercise (in shares) | | | | 3,546,984 | | | | | | | | | | | |
KAR/AFC note payable conversion | 3,625 | | | | | | 3,625 | | | | | | | | |
KAR/AFC warrant exercise (in shares) | | | | 752,927 | | | | | | | | | | | |
KAR/AFC warrant exercise | 144 | | | | | | 144 | | | | | | | | |
Ending balance (in shares) at Mar. 31, 2021 | | | | 113,670,060 | | | | | | | | | | | |
Ending balance at Mar. 31, 2021 | $ 229,108 | | | $ 11 | | | 278,272 | | | (49,059) | | | (116) | | |
Beginning balance (in shares) at Dec. 31, 2020 | 0 | 2,034,751 | (2,034,751) | | | | | | | | | | | | |
Beginning balance at Dec. 31, 2020 | $ 0 | $ 17,560 | $ (17,560) | | | | | | | | | | | | |
Ending balance (in shares) at Sep. 30, 2021 | 0 | | | | | | | | | | | | | | |
Ending balance at Sep. 30, 2021 | $ 0 | | | | | | | | | | | | | | |
Beginning balance (in shares) at Dec. 31, 2020 | 58,621,042 | | | 58,621,042 | 37,881,435 | 20,739,607 | | | | | | | | | |
Beginning balance at Dec. 31, 2020 | $ (13,237) | $ (30,797) | $ 17,560 | $ 6 | $ 4 | $ 2 | 20,779 | $ 3,221 | $ 17,558 | (34,037) | $ (34,037) | $ 0 | 15 | $ 15 | $ 0 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | | | | | | | | | |
Net loss | (25,703) | | | | | | | | | | | | | | |
Other comprehensive income, net of tax | $ (115) | | | | | | | | | | | | | | |
Cashless exercise of options (in shares) | 56,059 | | | | | | | | | | | | | | |
Ending balance (in shares) at Sep. 30, 2021 | 58,621,042 | | | 113,707,013 | | | | | | | | | | | |
Ending balance at Sep. 30, 2021 | $ 225,594 | | | $ 11 | | | 285,423 | | | (59,740) | | | (100) | | |
Beginning balance (in shares) at Mar. 31, 2021 | 0 | | | | | | | | | | | | | | |
Beginning balance at Mar. 31, 2021 | $ 0 | | | | | | | | | | | | | | |
Ending balance (in shares) at Jun. 30, 2021 | 0 | | | | | | | | | | | | | | |
Ending balance at Jun. 30, 2021 | $ 0 | | | | | | | | | | | | | | |
Beginning balance (in shares) at Mar. 31, 2021 | | | | 113,670,060 | | | | | | | | | | | |
Beginning balance at Mar. 31, 2021 | 229,108 | | | $ 11 | | | 278,272 | | | (49,059) | | | (116) | | |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | | | | | | | | | |
Net loss | (7,205) | | | | | | | | | (7,205) | | | | | |
Other comprehensive income, net of tax | 56 | | | | | | | | | | | | 56 | | |
Stock-based compensation | 3,704 | | | | | | 3,704 | | | | | | | | |
Ending balance (in shares) at Jun. 30, 2021 | | | | 113,670,060 | | | | | | | | | | | |
Ending balance at Jun. 30, 2021 | $ 225,663 | | | $ 11 | | | 281,976 | | | (56,264) | | | (60) | | |
Ending balance (in shares) at Sep. 30, 2021 | 0 | | | | | | | | | | | | | | |
Ending balance at Sep. 30, 2021 | $ 0 | | | | | | | | | | | | | | |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | | | | | | | | | |
Net loss | (3,476) | | | | | | | | | (3,476) | | | | | |
Other comprehensive income, net of tax | (40) | | | | | | | | | | | | (40) | | |
Stock-based compensation | $ 3,447 | | | | | | 3,447 | | | | | | | | |
Issuance of Class A common stock to settle vested restricted stock units (in shares) | | | | 36,953 | | | | | | | | | | | |
Ending balance (in shares) at Sep. 30, 2021 | 58,621,042 | | | 113,707,013 | | | | | | | | | | | |
Ending balance at Sep. 30, 2021 | $ 225,594 | | | $ 11 | | | $ 285,423 | | | $ (59,740) | | | $ (100) | | |