Property and Equipment, Net

6 Months Ended

Jun. 30, 2019

Property Plant And Equipment [Abstract]

Property and Equipment, Net

13.  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)	June 30, 2019		December 31, 2018		June 30, 2018
Equipment and vehicles	$	943,456	$	906,275	$	933,951
Quarry property		191,972		180,246		178,809
Land and land improvements		134,151		142,271		141,549
Buildings and leasehold improvements		109,356		108,884		105,038
Office furniture and equipment		66,587		65,680		63,806
Property and equipment		1,445,522		1,403,356		1,423,153
Less: accumulated depreciation and depletion		888,404		853,668		827,366
Property and equipment, net	$	557,118	$	549,688	$	595,787