Note 6 - Valuation Accounts - Allowance for Accounts Receivable (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($)
Balance	$ 2,322
Current period provision	6,854
Balance	3,805
Write offs against allowance, net of recoveries	(5,371)
Commercial Vehicle Receivables [Member]
Balance	160
Current period provision	0
Balance	102
Manufacturers' Receivables [Member]
Balance	573
Current period provision	2,576
Balance	964
Write offs against allowance, net of recoveries	(2,185)
Leasing, Parts and Service Receivables [Member]
Balance	1,589
Current period provision	3,212
Balance	1,660
Write offs against allowance, net of recoveries	(3,141)
Other Receivables [Member]
Balance	0
Current period provision	1,066
Balance	1,079
Write offs against allowance, net of recoveries	$ 13