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Floor Plan Financing - Narrative (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended		12 Months Ended
	Aug. 25, 2025	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Floor Plan Financing Arrangements
Debt Instrument [Line Items]
Interest expense		$ 13,800	$ 16,700	$ 40,800	$ 45,000
Daimler Truck Financial | Line of Credit
Debt Instrument [Line Items]
Debt instrument, interest free period (up to)				150 days
Maximum borrowing capacity		225,000		$ 225,000
Daimler Truck Financial | Line of Credit | Prime Rate
Debt Instrument [Line Items]
Debt instrument, basis spread						0.80%
PACCAR Financial Services | Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity		225,000		$ 225,000
PACCAR Financial Services | Line of Credit | Prime Rate
Debt Instrument [Line Items]
Debt instrument, basis spread				(0.71%)
Ford Motor Credit Company, LLC | Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity		42,000		$ 42,000
PNC Equipment Finance, LLC | Line of Credit | Revolving Credit Facility | PNC Equipment Finance, LLC
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 475,000		$ 475,000
Debt instrument, term	1 year
PNC Equipment Finance, LLC | Line of Credit | Secured Overnight Financing Rate (SOFR) | Revolving Credit Facility | PNC Equipment Finance, LLC
Debt Instrument [Line Items]
Debt instrument, basis spread				3.00%

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