Goodwill and Other Intangible Assets (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Goodwill [Line Items]
Fair value measurements, sensitivity analysis, description			A 100 basis point change in the discount rate would not have had a material impact on the results of the impairment analyses.
Impairment of assets, disposal group	$ 12,922,000	$ 0	$ 0
Impairment of intangible assets, indefinite-lived (excluding goodwill)	0	0	0
Goodwill [Member]
Goodwill [Line Items]
Fair value measurements, significant assumptions			management estimated the fair values of the Company’s reporting units using a discounted cash flow methodology, which incorporated five-year projections of revenues, operating costs and cash flows considering historical and anticipated future results, general economic and market conditions, as well as the impact of planned business and operational strategies. Management applied a discounted cash flow technique utilizing a terminal value equal to 5.5 times year five EBITDA, which is defined as income from continuing operations before non-controlling interests before interest, taxes, depreciation and amortization.
Globetec [Member]
Goodwill [Line Items]
Impairment of assets, disposal group	12,700,000	0	0
Goodwill and intangible asset impairment, disposal group	$ 6,400,000
Goodwill [Member]
Goodwill [Line Items]
Fair value inputs, earnings before interest, taxes, depreciation, and amortization multiple			5.5
Goodwill [Member] | Fair Value, Inputs, Level 3 [Member]
Goodwill [Line Items]
Change in discount rate			8.50%
Goodwill [Member] | Interest Rate Risk [Member]
Goodwill [Line Items]
Change in discount rate			1.00%