Note 12 - Property and Equipment, Net (Tables)

9 Months Ended

Sep. 30, 2021

Notes Tables

Property, Plant and Equipment [Table Text Block]

(in thousands)	September 30, 2021		December 31, 2020		September 30, 2020
Equipment and vehicles	$	997,560	$	950,416	$	959,828
Quarry property		188,838		206,073		199,677
Land and land improvements		126,130		135,639		135,102
Buildings and leasehold improvements		123,207		124,578		122,119
Office furniture and equipment		78,059		73,512		72,675
Property and equipment		1,513,794		1,490,218		1,489,401
Less: accumulated depreciation and depletion		1,003,136		963,202		953,145
Property and equipment, net	$	510,658	$	527,016	$	536,256