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Property and Equipment, Net
6 Months Ended
Jun. 30, 2017
Property, Plant and Equipment [Abstract]  
Property and Equipment, Net
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,
2017
 
December 31,
2016
 
June 30,
2016
Equipment and vehicles
 
$
774,903

 
$
756,602

 
$
769,307

Quarry property
 
176,041

 
174,839

 
179,773

Land and land improvements
 
111,766

 
110,999

 
111,425

Buildings and leasehold improvements
 
84,113

 
82,762

 
82,733

Office furniture and equipment
 
58,377

 
56,381

 
63,721

Property and equipment
 
1,205,200

 
1,181,583

 
1,206,959

Less: accumulated depreciation and depletion
 
791,121

 
774,933

 
797,099

Property and equipment, net
 
$
414,079

 
$
406,650

 
$
409,860