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v3.23.1

Business Acquisitions and Dispositions - Additional Information (Details) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Mar. 31, 2023 USD ($) retail_Units Business | Mar. 31, 2022 USD ($) Business | Mar. 31, 2022 USD ($) | Mar. 31, 2022 USD ($) retail_Units | Sep. 30, 2023 USD ($) retail_Units | Sep. 30, 2022 USD ($)
Business Acquisition [Line Items] |  |  |  |  |  |
Number of franchises disposed | 0 | 0 |  | 1 |  |
Net cash generated from disposition | $ 0 |  |  |  |  |
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Inventory | 4,300,000 |  |  |  |  |
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Intangibles | 1,100,000 |  |  |  |  |
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Consideration Transferred | 14,700,000 |  |  |  |  |
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Financial Assets | 3,400,000 |  |  |  |  |
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Financial Liabilities | $ 5,900,000 |  |  |  |  |
Mid-line import franchise |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Net cash generated from disposition |  |  | $ 0 |  |  |
EchoPark Segment [Member] |  |  |  |  |  |
Business Combinations [Abstract] |  |  |  |  |  |
Number of acquired franchises | Business | 0 |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Number of acquired franchises | Business | 0 |  |  |  |  |
Stand-alone pre-owned vehicle business |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory |  |  |  |  | $ 11,600,000 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment |  |  |  |  | 700,000 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill |  |  |  |  | $ 22,600,000 |
Franchised [Member] |  |  |  |  |  |
Business Combinations [Abstract] |  |  |  |  |  |
Number of acquired franchises | retail_Units |  |  |  |  | 2 |
Business Acquisition [Line Items] |  |  |  |  |  |
Number of acquired franchises | retail_Units |  |  |  |  | 2 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory |  |  |  |  |  | $ 4,900,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment |  |  |  |  |  | 100,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill |  |  |  |  |  | $ 6,400,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other |  | $ 1,100,000 | $ 1,100,000 | $ 1,100,000 |  |

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