Note 5 - Inventories - Inventories (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
New commercial vehicles	$ 1,388,687	$ 955,485
Used commercial vehicles	47,036	86,306
Parts and accessories	353,992	369,562
Other	33,100	34,564
Less allowance	(21,368)	(16,488)
Total	$ 1,801,447	$ 1,429,429