Property and Equipment, Net (Tables)

3 Months Ended

Mar. 31, 2017

Property, Plant and Equipment [Abstract]

Property and Equipment

Balances of major classes of assets and allowances for depreciation and depletion are included in property and equipment, net in the condensed consolidated balance sheets and were as follows:

(in thousands)	March 31, 2017		December 31, 2016		March 31, 2016
Equipment and vehicles	$	768,995	$	756,602	$	750,987
Quarry property	175,418		174,839		179,987
Land and land improvements	112,028		110,999		110,450
Buildings and leasehold improvements	83,727		82,762		83,053
Office furniture and equipment	56,457		56,381		62,458
Property and equipment	1,196,625		1,181,583		1,186,935
Less: accumulated depreciation and depletion	784,135		774,933		788,185
Property and equipment, net	$	412,490	$	406,650	$	398,750