Note 17 - Revenue - Disaggregated Revenue by Revenue Source (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenue	$ 4,878,908	$ 4,499,717	$ 5,562,298
Commercial Vehicle [Member]
Revenue	3,039,953	2,863,309	3,757,584
Parts [Member]
Revenue	1,059,382	911,102	993,288
Commercial Vehicle Repair Service [Member]
Revenue	733,981	689,343	769,222
Financial Service [Member]
Revenue	16,385	12,047	14,618
Insurance [Member]
Revenue	11,579	9,902	9,825
Product and Service, Other [Member]
Revenue	$ 17,628	$ 14,014	$ 17,761