Note 19 - Revenue - Disaggregated Revenue by Revenue Source (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenue	$ 5,562,298	$ 5,267,952
Commercial Vehicle [Member]
Revenue	3,757,584	3,558,637
Parts [Member]
Revenue	993,288	937,241
Commercial Vehicle Repair Service [Member]
Revenue	769,222	732,811
Financial Service [Member]
Revenue	14,618	10,795
Insurance [Member]
Revenue	9,825	9,740
Product and Service, Other [Member]
Revenue	$ 17,761	$ 18,728	$ 14,257

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration