Long-Term and Other Debt (Details 5)		12 Months Ended				1 Months Ended
	May 02, 2012 CNY	Dec. 31, 2011 Credit Agreement [Member] August Amendment USD ($)	Dec. 31, 2012 Credit Agreement [Member] August Amendment USD ($)	Dec. 31, 2012 Secured Senior Term Loan and Revolving Credit Facility [Member] USD ($)	Feb. 21, 2012 Secured Senior Term Loan and Revolving Credit Facility [Member] USD ($)	Aug. 31, 2011 Term Loan, varying interest rate August Amendment tranche	Dec. 31, 2012 Incremental revolving facility August Amendment USD ($)
Debt Instrument
Number of tranche requests						1
Maximum revolving commitments	60,000,000		$ 200,000,000	$ 250,000			$ 200,000,000
Fees and expenses		6,300,000
Deferred financing fees		5,800,000
Loss on early extinguishment of long-term debt		4,200,000
Refinanced amount					$ 16,400,000