Property and Equipment, Net (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015
Property, Plant and Equipment [Line Items]
Property and equipment	$ 1,206,959	$ 1,163,567	$ 1,204,823
Accumulated depreciation and depletion	797,099	778,438	812,834
Property and equipment, net	409,860	385,129	391,989
Equipment and vehicles [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	769,307	731,224	768,831
Quarry property [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	179,773	178,357	172,009
Land and land improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	111,425	110,294	110,452
Building and leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	82,733	82,871	82,628
Office furniture and equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	$ 63,721	$ 60,821	$ 70,903