Note 13 - Property and Equipment, Net (Tables)

3 Months Ended

Mar. 31, 2020

Notes Tables

Property, Plant and Equipment [Table Text Block]

(in thousands)	March 31, 2020		December 31, 2019		March 31, 2019
Equipment and vehicles	$	942,116	$	947,687	$	915,748
Quarry property		188,380		188,960		191,805
Land and land improvements		134,147		132,531		140,078
Buildings and leasehold improvements		124,784		122,316		108,587
Office furniture and equipment		68,327		67,991		66,176
Property and equipment		1,457,754		1,459,485		1,422,394
Less: accumulated depreciation and depletion		922,796		917,188		869,890
Property and equipment, net	$	534,958	$	542,297	$	552,504