Redeemable Convertible Preferred Stock	12 Months Ended
Dec. 31, 2021
Temporary Equity Disclosure [Abstract]
Redeemable Convertible Preferred Stock	Redeemable Convertible Preferred StockAs of December 31, 2020, the Amended and Restated Certificate of Incorporation of Former CarLotz provided for two classes of ownership: common stock and Series A Preferred Stock. The holder of the Series A Preferred Stock received distribution priority in order of 1.5 times the sum of any unpaid returns and unreturned capital contributions. Preferred returns were calculated at an 8.00% annual rate. Unpaid cumulative distributions were approximately $4,800 as of December 31, 2020, and the Series A Preferred Stock had a liquidation preference of $37,114 as of December 31, 2020. Upon liquidation of Former CarLotz, proceeds in excess of the Series A Preferred Stock would have been shared pro rata among all stockholders based on the number of shares. The unpaid cumulative distributions are included as Accrued expenses — related party on the accompanying consolidated balance sheets. As a result of the Merger, the Company settled Former CarLotz’ redeemable convertible preferred stock and redeemable convertible preferred stock tranche obligation with carrying values of $17,560 and $2,832, respectively, as of December 31, 2020. The convertible preferred stock is reflected retroactively in the earliest period and presented on an as converted basis.The fair value of the obligation to purchase future tranches of Series A Redeemable Convertible Preferred Stock (“Series A Preferred Stock”) was estimated by utilizing the Black Scholes pricing model and included the impact of the lack of marketability of the instruments. The key inputs for the fair value measurement include the fair value per share of the Company’s Series A Preferred Stock, expected volatility, the remaining years to liquidity and the risk-free interest rate. The most significant input impacting the fair value of the Series A Preferred Stock tranche obligation is the fair value of the Series A Preferred Stock as of each remeasurement date. The determination of the fair value per share of the redeemable convertible preferred stock is estimated by taking into consideration the most recent sales of redeemable convertible preferred stock, results obtained from third-party valuations and additional factors that are deemed relevant. As a private company at the last time of valuation, there was a lack of Company-specific historical and implied volatility information of the Company’s Series A Preferred Stock. Therefore, estimates of expected stock volatility are based on the historical volatility of publicly traded peer companies for a term equal to the remaining contractual term of the obligations. The risk-free interest rate was determined by reference to the U.S. Treasury yield curve for time periods approximately equal to the remaining years to liquidity.

Redeemable Convertible Preferred Stock

12 Months Ended

Dec. 31, 2021

Temporary Equity Disclosure [Abstract]

Redeemable Convertible Preferred StockAs of December 31, 2020, the Amended and Restated Certificate of Incorporation of Former CarLotz provided for two classes of ownership: common stock and Series A Preferred Stock. The holder of the Series A Preferred Stock received distribution priority in order of 1.5 times the sum of any unpaid returns and unreturned capital contributions. Preferred returns were calculated at an 8.00% annual rate. Unpaid cumulative distributions were approximately $4,800 as of December 31, 2020, and the Series A Preferred Stock had a liquidation preference of $37,114 as of December 31, 2020. Upon liquidation of Former CarLotz, proceeds in excess of the Series A Preferred Stock would have been shared pro rata among all stockholders based on the number of shares. The unpaid cumulative distributions are included as Accrued expenses — related party on the accompanying consolidated balance sheets. As a result of the Merger, the Company settled Former CarLotz’ redeemable convertible preferred stock and redeemable convertible preferred stock tranche obligation with carrying values of $17,560 and $2,832, respectively, as of December 31, 2020. The convertible preferred stock is reflected retroactively in the earliest period and presented on an as converted basis.The fair value of the obligation to purchase future tranches of Series A Redeemable Convertible Preferred Stock (“Series A Preferred Stock”) was estimated by utilizing the Black Scholes pricing model and included the impact of the lack of marketability of the instruments. The key inputs for the fair value measurement include the fair value per share of the Company’s Series A Preferred Stock, expected volatility, the remaining years to liquidity and the risk-free interest rate. The most significant input impacting the fair value of the Series A Preferred Stock tranche obligation is the fair value of the Series A Preferred Stock as of each remeasurement date. The determination of the fair value per share of the redeemable convertible preferred stock is estimated by taking into consideration the most recent sales of redeemable convertible preferred stock, results obtained from third-party valuations and additional factors that are deemed relevant. As a private company at the last time of valuation, there was a lack of Company-specific historical and implied volatility information of the Company’s Series A Preferred Stock. Therefore, estimates of expected stock volatility are based on the historical volatility of publicly traded peer companies for a term equal to the remaining contractual term of the obligations. The risk-free interest rate was determined by reference to the U.S. Treasury yield curve for time periods approximately equal to the remaining years to liquidity.