Note 6 - Valuation Accounts - Allowance for Accounts Receivable (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($)
Balance	$ 1,590
Current period provision	5,358
Balance	2,322
Write offs against allowance, net of recoveries	(4,626)
Commercial Vehicle Receivables [Member]
Balance	76
Current period provision	105
Balance	160
Manufacturers' Receivables [Member]
Balance	419
Current period provision	2,580
Balance	573
Write offs against allowance, net of recoveries	(2,426)
Leasing, Parts and Service Receivables [Member]
Balance	1,069
Current period provision	2,673
Balance	1,589
Write offs against allowance, net of recoveries	(2,153)
Other Receivables [Member]
Balance	$ 26