Property and Equipment, Net (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013
Property, Plant and Equipment [Line Items]
Property and equipment	$ 1,215,551	$ 1,209,980	$ 1,214,917
Accumulated depreciation and depletion	791,279	773,121	756,893
Property and equipment, net	424,272	436,859	458,024
Equipment and vehicles [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	771,934	765,971	756,098
Quarry property [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	169,982	170,442	180,205
Land and land improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	118,985	119,917	125,606
Building and leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	83,813	83,494	83,743
Office furniture and equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	$ 70,837	$ 70,156	$ 69,265