Note 7 - Floor Plan Notes Payable and Lines of Credit (Details Textual) $ in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($)	Dec. 31, 2023 CAD ($)	Dec. 31, 2022 USD ($)
Line of Credit Facility, Maximum Borrowing Capacity	$ 20,000
Floor Plan Notes Payable	1,139,744		$ 933,203
Line of Credit Amount Pledged to Secure Letters of Credit	17,900
Line of Credit Facility, Remaining Borrowing Capacity	$ 2,100
Floor Plan Credit Agreement [Member]
Debt Instrument, Interest Rate, Effective Percentage	6.54%	6.54%
Floor Plan Notes Payable	$ 984,400
Debt, Weighted Average Interest Rate	3.30%	3.30%	1.60%
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	$ 55,900
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | RTC Canada Floor Plan Agreement [Member]
Debt Instrument, Basis Spread on Variable Rate	1.20%
BMO Harris Bank N.A. [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 1,000,000
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%