Business Segment Information Business Segment Information - Narrative (Details) (USD $)	3 Months Ended	12 Months Ended					12 Months Ended	3 Months Ended	12 Months Ended													12 Months Ended				12 Months Ended
	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013 Minimum [Member] Large Project Construction [Member]	Dec. 31, 2013 Maximum [Member] Construction [Member]	Dec. 31, 2013 Quarry property [Member]	Dec. 31, 2013 Quarry property [Member] Restructuring Type, Non-performing Quarry Sites [Member]	Dec. 31, 2013 Quarry property [Member] Restructuring Type, Non-performing Quarry Sites [Member]	Dec. 31, 2013 Enterprise Improvement Plan [Member]	Dec. 31, 2012 Enterprise Improvement Plan [Member]	Dec. 31, 2011 Enterprise Improvement Plan [Member]	Dec. 31, 2010 Enterprise Improvement Plan [Member]	Dec. 31, 2010 Enterprise Improvement Plan [Member] Construction Materials [Member]	Dec. 31, 2010 Enterprise Improvement Plan [Member] Real Estate Segment [Member]	Dec. 31, 2012 Enterprise Improvement Plan [Member] Contract Termination [Member]	Dec. 31, 2011 Enterprise Improvement Plan [Member] Contract Termination [Member]	Dec. 31, 2013 Enterprise Improvement Plan [Member] Contract Termination [Member] Construction Materials [Member]	Dec. 31, 2012 Enterprise Improvement Plan [Member] Restructuring Type, Real Estate Asset Impairment [Member]	Dec. 31, 2011 Enterprise Improvement Plan [Member] Restructuring Type, Real Estate Asset Impairment [Member]	Dec. 31, 2013 Enterprise Improvement Plan [Member] Restructuring Type, Real Estate Asset Impairment [Member]	Dec. 31, 2013 Enterprise Improvement Plan [Member] Restructuring Type, Real Estate Asset Impairment [Member] Real Estate Segment [Member]	Dec. 31, 2012 Enterprise Improvement Plan [Member] Quarry property [Member] Restructuring Type, Non-performing Quarry Sites [Member]	Dec. 31, 2011 Enterprise Improvement Plan [Member] Quarry property [Member] Restructuring Type, Non-performing Quarry Sites [Member]	Dec. 31, 2013 Enterprise Improvement Plan [Member] Quarry property [Member] Restructuring Type, Non-performing Quarry Sites [Member]	Dec. 31, 2013 Enterprise Improvement Plan [Member] Quarry property [Member] Restructuring Type, Non-performing Quarry Sites [Member] Construction Materials [Member]	Dec. 31, 2010 Noncontrolling Interest [Member] Enterprise Improvement Plan [Member]	Dec. 31, 2013 Noncontrolling Interest [Member] Enterprise Improvement Plan [Member] Restructuring Type, Real Estate Asset Impairment [Member] Real Estate Segment [Member]
Segment Reporting Information [Line Items]
Total Contract Value					$ 75,000,000	$ 75,000,000
Restructuring and impairment charges (gains), net										48,975,000	(3,728,000)	2,181,000	109,300,000	10,300,000	86,300,000	(635,000)	32,000	3,234,000	(3,093,000)	1,452,000		31,090,000	0	226,000		14,651,000	20,000,000	3,900,000
Asset Impairment Charges	3,200,000	3,164,000	0	0			17,800,000	3,200,000	3,200,000
Real estate held for development and sale	$ 12,478,000	$ 12,478,000	$ 50,223,000					$ 4,200,000	$ 4,200,000												$ 44,600,000				$ 17,100,000	$ 21,300,000