Property and Equipment, Net - Property and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017
Property Plant And Equipment [Line Items]
Property and equipment	$ 1,405,314	$ 1,209,141	$ 1,212,526
Accumulated depreciation and depletion	844,696	801,723	800,352
Property and equipment, net	560,618	407,418	412,174
Equipment and vehicles [Member]
Property Plant And Equipment [Line Items]
Property and equipment	917,186	778,549	778,010
Quarry property [Member]
Property Plant And Equipment [Line Items]
Property and equipment	180,004	182,267	177,427
Land and land improvements [Member]
Property Plant And Equipment [Line Items]
Property and equipment	138,875	108,830	113,384
Building and leasehold improvements [Member]
Property Plant And Equipment [Line Items]
Property and equipment	105,895	82,601	83,914
Office furniture and equipment [Member]
Property Plant And Equipment [Line Items]
Property and equipment	$ 63,354	$ 56,894	$ 59,791