Description of the Business and Summary of Significant Accounting Policies (Details 3) (USD $)	3 Months Ended	12 Months Ended
	Sep. 30, 2012 JointVenture	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Intangible Assets
Gross assets		$ 601,500,000	$ 601,500,000
Less accumulated amortization		215,341,000	184,865,000
Net assets		386,159,000	416,635,000
Amortization expense		30,500,000	34,300,000	38,300,000
Estimated amortization expense
2014		26,090,000
2015		23,390,000
2016		20,902,000
2017		18,193,000
2018		15,764,000
Thereafter		92,020,000
Total		196,359,000
Impairment of Long-Lived Tangible and Finite-Lived Intangible Assets
Number of small joint ventures terminated	2
Asset impairment charges		308,000	8,250,000
Weighted average
Intangible Assets
Amortization Period		20 years
Trademarks
Intangible Assets
Gross assets		189,800,000	189,800,000
Customer and scrap generator relationships
Intangible Assets
Gross assets		408,400,000	408,400,000
Customer and scrap generator relationships | Minimum
Intangible Assets
Amortization Period		10 years
Customer and scrap generator relationships | Maximum
Intangible Assets
Amortization Period		25 years
Customer and scrap generator relationships | Weighted average
Intangible Assets
Amortization Period		20 years
Trademarks
Intangible Assets
Gross assets		3,200,000	3,200,000
Amortization Period		12 years
Trademarks | Weighted average
Intangible Assets
Amortization Period		12 years
Other
Intangible Assets
Gross assets		$ 100,000	$ 100,000
Amortization Period		5 years
Other | Weighted average
Intangible Assets
Amortization Period		5 years