Note 11 - Accounts Receivable and Allowance for Credit Losses - Allowance for Accounts Receivable (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Mar. 31, 2024	Sep. 30, 2023
Balance		$ 3,805
Current period provision		1,767
Write offs against allowance, net of recoveries		(1,480)
Balance		4,092
Commercial Vehicle Receivables [Member]
Balance		102
Current period provision	$ 0
Write offs against allowance, net of recoveries	57
Balance	$ 159
Manufacturers' Receivables [Member]
Balance		964
Current period provision		667
Write offs against allowance, net of recoveries		(644)
Balance		987
Leasing, Parts and Service Receivables [Member]
Balance		1,660
Current period provision		1,095
Write offs against allowance, net of recoveries		(864)
Balance		1,891
Other Receivables [Member]
Balance		1,079
Current period provision		5
Write offs against allowance, net of recoveries		(29)
Balance		$ 1,055