Property and Equipment, Net (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Property and equipment	$ 1,163,567	$ 1,163,567	$ 1,203,104
Less: accumulated depreciation and depletion	778,438	778,438	793,451
Property and equipment, net	385,129	385,129	409,653
Depreciation and Depletion		61,000	64,900	$ 62,700
Interest Costs, Capitalized During Period		400	700	900
Gain on sales of property and equipment		8,286	15,972	12,130
Asset Impairment Charges	(1,300)		1,300
Real Estate Held for Development and Sale [Member]
Property, Plant and Equipment [Line Items]
Interest Costs, Capitalized During Period		400	400	$ 600
Equipment and vehicles [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	82,871	82,871	82,655
Quarry property [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	178,357	178,357	172,081
Land and land improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	731,224	731,224	767,313
Building and leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	110,294	110,294	110,235
Office furniture and equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	$ 60,821	$ 60,821	$ 70,820