Fair Value Measurements - Other Fair Value Disclosures (Details) - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Fair Value Measurements
Transfers of assets from level 1 to level 2	$ 0	$ 0
Transfers of assets from level 2 to level 1	0	0
Transfers of liabilities from level 1 to level 2	0	0
Transfers of liabilities from level 2 to level 1	0	0
Transfers of assets between the fair value measurement levels 3	0	0
Transfers of liabilities between the fair value measurement levels 3	0	0
Level 2 \| Carrying Value \| Term Loan Facility
Fair Value Measurements
Debt instrument	1,311,362	1,338,321	$ 1,335,535
Level 2 \| Carrying Value \| Floor Plan Facility Revolving Line of Credit
Fair Value Measurements
Debt instrument		31,885
Level 2 \| Carrying Value \| Real Estate Facilities
Fair Value Measurements
Debt instrument	163,018	183,497	173,132
Level 2 \| Carrying Value \| Other Long-Term Debt
Fair Value Measurements
Debt instrument	7,676	8,007	7,926
Level 2 \| Fair Value \| Term Loan Facility
Fair Value Measurements
Debt instrument	1,290,544	1,296,666	1,320,286
Level 2 \| Fair Value \| Floor Plan Facility Revolving Line of Credit
Fair Value Measurements
Debt instrument		32,791
Level 2 \| Fair Value \| Real Estate Facilities
Fair Value Measurements
Debt instrument	167,572	189,002	176,684
Level 2 \| Fair Value \| Other Long-Term Debt
Fair Value Measurements
Debt instrument	$ 6,677	$ 6,929	$ 6,652

Amount of transfers of assets measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2.

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- Definition

Amount of transfers of assets measured on a recurring basis out of Level 2 of the fair value hierarchy into Level 1.

+ References

No definition available.

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- Definition

Amount of transfers of liabilities measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2.

+ References

No definition available.

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Amount of transfers of liabilities measured on a recurring basis out of Level 2 of the fair value hierarchy into Level 1.

+ References

No definition available.

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- Definition

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

+ References

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- References

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- Definition

Amount of transfer of financial instrument classified as an asset into (out of) level 3 of the fair value hierarchy.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

Amount of transfers of financial instrument classified as a liability into (out of) level 3 of the fair value hierarchy.

+ References

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