Property and Equipment, Net

3 Months Ended

Mar. 31, 2018

Property Plant And Equipment [Abstract]

Property and Equipment, Net

12. Property and Equipment, net

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, 2018		December 31, 2017		March 31, 2017
Equipment and vehicles	$	790,942	$	778,549	$	768,995
Quarry property		177,722		182,267		175,418
Land and land improvements		114,607		108,830		112,028
Buildings and leasehold improvements		82,775		82,601		83,727
Office furniture and equipment		57,068		56,894		56,457
Property and equipment		1,223,114		1,209,141		1,196,625
Less: accumulated depreciation and depletion		813,406		801,723		784,135
Property and equipment, net	$	409,708	$	407,418	$	412,490