Note 7 - Floor Plan Notes Payable and Lines of Credit (Details Textual) $ in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($)	Dec. 31, 2022 CAD ($)	Dec. 31, 2021 USD ($)
Line of Credit Facility, Maximum Borrowing Capacity	$ 20,000
Floor Plan Notes Payable	933,203		$ 630,731
Line of Credit Amount Pledged to Secure Letters of Credit	14,100
Line of Credit Facility, Remaining Borrowing Capacity	$ 5,900
Floor Plan Credit Agreement [Member]
Debt Instrument, Interest Rate, Effective Percentage	5.24%	5.24%
Floor Plan Notes Payable	$ 762,900
Debt, Weighted Average Interest Rate	1.56%	1.56%	0.42%
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	$ 44,600
London Interbank Offered Rate (LIBOR) [Member] | RTC Canada Floor Plan Agreement [Member]
Debt Instrument, Basis Spread on Variable Rate	1.10%
CDOR [Member] | RTC Canada Floor Plan Agreement [Member]
Debt Instrument, Basis Spread on Variable Rate	0.90%
BMO Harris Bank N.A. [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 1,000,000
BMO Harris Bank N.A. [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	1.10%