Note 7 - Floor Plan Notes Payable and Lines of Credit (Details Textual) $ in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2024 CAD ($)	Feb. 02, 2024 USD ($)
Line of Credit Facility, Maximum Borrowing Capacity	$ 25,000
Floor Plan Notes Payable	1,081,199	$ 1,139,744		$ 1,081,199
Long-Term Line of Credit	0
Line of Credit Amount Pledged to Secure Letters of Credit	18,800
Line of Credit Facility, Remaining Borrowing Capacity		$ 6,200
Floor Plan Credit Agreement [Member]
Debt Instrument, Interest Rate, Effective Percentage		5.69%
Floor Plan Notes Payable	$ 389,300
Debt, Weighted Average Interest Rate	4.40%	3.30%	4.40%
PFC Floor Plan Credit Agreement [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 800,000
Debt Instrument, Interest Rate, Effective Percentage	5.40%		5.40%
Floor Plan Notes Payable	$ 492,700
RTC Canada Floor Plan Agreement [Member]
Line of Credit Facility, Maximum Borrowing Capacity			$ 116.7
Debt Instrument, Covenant, Maximum Percentage of Available Credit Limit for Inventory Purchases	20.00%		20.00%
Floor Plan Notes Payable	$ 78,200
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | RTC Canada Floor Plan Agreement [Member]
Debt Instrument, Basis Spread on Variable Rate	1.27%
Prime Rate [Member] | PFC Floor Plan Credit Agreement [Member]
Debt Instrument, Basis Spread on Variable Rate	2.10%
BMO Harris Bank N.A. [Member]
Line of Credit Facility, Maximum Borrowing Capacity		$ 675,000,000
BMO Harris Bank N.A. [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member]
Debt Instrument, Basis Spread on Variable Rate		1.20%