Description of Business	12 Months Ended
Description of Business	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business	Description of Business Defined Terms Unless otherwise indicated or unless the context otherwise requires, the following terms used herein shall have the following meanings: •references to “CarLotz,” “we,” “us,” “our” and the “Company” are to CarLotz, Inc. and its consolidated subsidiaries; •references to “Acamar Partners” refer to the Company for periods prior to the consummation of the Merger referred to below; •references to “Acamar Sponsor” are to Acamar Partners Sponsor I LLC; and •references to the “Merger” are to the merger pursuant to that certain Agreement and Plan of Merger, dated as of October 21, 2020 (as amended by Amendment No. 1, dated December 16, 2020, the “Merger Agreement”), by and among CarLotz, Inc. (f/k/a Acamar Partners Acquisition Corp.) (the “Company”), Acamar Partners Sub, Inc., a wholly owned subsidiary of CarLotz, Inc. (“Merger Sub”), and CarLotz Group, Inc. (f/k/a CarLotz, Inc.) (“Former CarLotz”), pursuant to which Merger Sub merged with and into Former CarLotz, with Former CarLotz surviving as the surviving company and as a wholly owned subsidiary of the Company. The Company is a used vehicle consignment and Retail RemarketingTM company based in Richmond, Virginia. The Company operates an innovative and one-of-a-kind consumer and commercial used vehicle consignment and sales business model, with an online marketplace and twenty-two retail hub locations throughout the United States, including in Alabama, California, Colorado, Georgia, Florida, Illinois, North Carolina, Tennessee, Texas, Virginia and Washington State. Subsidiaries are consolidated when the parent is deemed to have control over the subsidiaries’ operations. Subsidiary Operations CarLotz, Inc. owns 100% of CarLotz Group, Inc. (a Delaware corporation), which owns 100% of CarLotz, Inc. (an Illinois corporation), CarLotz Nevada, LLC (a Delaware LLC), CarLotz California, LLC (a California LLC), Orange Grove Fleet Solutions, LLC (a Virginia LLC), Orange Peel Protection Reinsurance Co. Ltd. (a Turks and Caicos Islands, British West Indies company) and Orange Peel LLC (a Virginia LLC), which owns 100% of Orange Peel Reinsurance, Ltd. (a Turks and Caicos Islands, British West Indies company). Basis of Presentation On January 21, 2021 (the “Closing Date”), the Company consummated the merger pursuant to that certain Agreement and Plan of Merger, dated as of October 21, 2020, by and among the Company, Merger Sub and Former CarLotz, as amended by Amendment No. 1 to the Agreement and Plan of Merger, dated December 16, 2020, by and among the Company, Merger Sub and Former CarLotz (See Note 3 “Merger” for further discussion). Pursuant to the terms of the Merger Agreement, a business combination between the Company and Former CarLotz was effected through the merger of Merger Sub with and into Former CarLotz with Former CarLotz continuing as the surviving company. Notwithstanding the legal form of the Merger pursuant to the Merger Agreement, the Merger is accounted for as a reverse recapitalization in accordance with U.S. GAAP. Under this method of accounting, CarLotz is treated as the acquired company and Former CarLotz is treated as the acquiror for financial statement reporting and accounting purposes. As a result of Former CarLotz being the accounting acquirer, the financial reports filed with the SEC by the Company subsequent to the Merger are prepared “as if” Former CarLotz is the predecessor and legal successor to the Company. The historical operations of Former CarLotz are deemed to be those of the Company. Thus, the financial statements included in this report reflect (i) the historical operating results of Former CarLotz prior to the Merger, (ii) the combined results of the Company and Former CarLotz following the Merger on January 21, 2021, (iii) the assets and liabilities of Former CarLotz at their historical cost and (iv) the Company’s equity structure for all periods presented. The recapitalization of the number of shares of common stock attributable to the purchase of Former CarLotz in connection with the Merger is reflected retroactively to the earliest period presented and will be utilized for calculating earnings per share in all prior periods presented. No step-up basis of intangible assets or goodwill was recorded in the Merger transaction consistent with the treatment of the transaction as a reverse recapitalization of Former CarLotz. In connection with the Merger, Acamar Partners Acquisition Corp. changed its name to CarLotz, Inc. The Company’s common stock is now listed on The Nasdaq Global Market under the symbol “LOTZ” and warrants to purchase the common stock at an exercise price of $11.50 per share are listed on The Nasdaq Global Market under the symbol “LOTZW”. Prior to the Merger, the Company neither engaged in any operations nor generated any revenue. Until the Merger, based on the Company’s business activities, it was a “shell company” as defined under the Securities Exchange Act of 1934, as amended (the “Exchange Act”). The accompanying consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (U.S. GAAP) and applicable rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) regarding financial reporting.