Note 12 - Accounts Receivable and Allowance for Credit Losses - Allowance for Accounts Receivable (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2022 USD ($)
Balance	$ 1,590
Current period provision	842
Balance	1,912
Write offs against allowance, net of recoveries	(520)
Commercial Vehicle Receivables [Member]
Balance	76
Current period provision	80
Balance	156
Manufacturers' Receivables [Member]
Balance	419
Current period provision	292
Balance	604
Write offs against allowance, net of recoveries	(107)
Leasing, Parts and Service Receivables [Member]
Balance	1,069
Current period provision	470
Balance	1,130
Write offs against allowance, net of recoveries	(409)
Other Receivables [Member]
Balance	26
Balance	22
Write offs against allowance, net of recoveries	$ (4)