Fair Value Measurements (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022
Fair Value Measurements
Liabilities related to assets held for sale	$ 4,022	$ 0	$ 0
Level 2 | Carrying Value | Term Loan Facility
Fair Value Measurements
Debt instrument	1,348,882	1,360,454	1,359,230
Level 2 | Carrying Value | Floor Plan Facility
Fair Value Measurements
Debt instrument	20,885	20,885	20,885
Level 2 | Carrying Value | Real Estate Facilities
Fair Value Measurements
Debt instrument	192,565	145,911	21,666
Liabilities related to assets held for sale	4,000
Level 2 | Carrying Value | Other Long-Term Debt
Fair Value Measurements
Debt instrument	8,327	3,280	3,311
Level 2 | Fair Value | Term Loan Facility
Fair Value Measurements
Debt instrument	1,380,135	1,394,290	1,394,290
Level 2 | Fair Value | Floor Plan Facility
Fair Value Measurements
Debt instrument	20,999	19,823	18,191
Level 2 | Fair Value | Real Estate Facilities
Fair Value Measurements
Debt instrument	195,585	145,664	20,153
Level 2 | Fair Value | Other Long-Term Debt
Fair Value Measurements
Debt instrument	$ 6,700	$ 2,944	$ 2,926