Goodwill and Other Intangible Assets (Details 4) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Total intangible assets
Cost	$ 311,456,000	$ 311,456,000
Accumulated Amortization	(84,649,000)	(71,568,000)
Accumulated Impairment Charge	(113,067,000)	(113,067,000)
Carrying value	113,740,000	126,821,000
Amortization expense
Amortization expense	13,100,000	18,300,000	13,100,000
Amortization expense, 2014	11,900,000
Amortization expense, 2015	5,300,000
Amortization expense, 2016	3,500,000
Amortization expense, 2017	3,500,000
Amortization expense, 2018	3,500,000
Amortization expense, thereafter	35,500,000
Trade Names (Amortizable)
Finite-Lived intangible assets
Cost	74,350,000	74,350,000
Accumulated amortization	(6,341,000)	(3,854,000)
Accumulated impairment charge	(23,232,000)	(23,232,000)
Carrying value	44,777,000	47,264,000
Weighted average amortization period	20 years	20 years
Customer relationships
Finite-Lived intangible assets
Cost	39,800,000	39,800,000
Accumulated amortization	(14,315,000)	(13,029,000)
Accumulated impairment charge	(16,645,000)	(16,645,000)
Carrying value	8,840,000	10,126,000
Weighted average amortization period	11 years 4 months 24 days	11 years 4 months 24 days
Construction contract backlog
Finite-Lived intangible assets
Cost	73,706,000	73,706,000
Accumulated amortization	(63,993,000)	(54,685,000)
Carrying value	$ 9,713,000	$ 19,021,000
Weighted average amortization period	3 years 7 months 6 days	3 years 7 months 6 days