Note 4 - Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Property, Plant and Equipment [Table Text Block]

(in thousands)	Estimated Useful Lives		2018		2017
Revenue equipment		3-10 years	$	504,192	$	519,797
Communications equipment		5-10 years		3,850		4,585
Land and improvements		0-15 years		25,240		25,061
Buildings and leasehold improvements		7-40 years		75,134		74,513
Construction in-progress		-		3,121		2,023
Other		2-10 years		27,233		25,009
			$	638,770	$	650,988