Long-Term Debt (Details)																	1 Months Ended										1 Months Ended
	Jun. 30, 2013 USD ($)	Dec. 31, 2012 USD ($)	Jun. 30, 2013 Revolving credit facility USD ($)	Dec. 31, 2012 Revolving credit facility USD ($)	Jun. 30, 2013 Term Loan, varying interest rates, due 2015 USD ($)		Dec. 31, 2012 Term Loan, varying interest rates, due 2015 USD ($)		Jun. 30, 2013 8.125% senior subordinated notes due 2018 USD ($)	Dec. 31, 2012 8.125% senior subordinated notes due 2018 USD ($)	Jun. 30, 2013 9.25% senior subordinated notes due 2019 USD ($)		Dec. 31, 2012 9.25% senior subordinated notes due 2019 USD ($)		Jun. 30, 2013 6.250% Senior subordinated notes due in 2020 USD ($)	Dec. 31, 2012 6.250% Senior subordinated notes due in 2020 USD ($)	Apr. 30, 2013 Chinese Renminbi Yuan denominated loans, due 2014 and Other debt CNY	Jun. 30, 2013 Chinese Renminbi Yuan denominated loans, due 2014 and Other debt USD ($)	Dec. 31, 2012 Chinese Renminbi Yuan denominated loans, due 2014 and Other debt USD ($)	Jun. 30, 2013 Capital lease obligations payable monthly through 2017 USD ($)	Dec. 31, 2012 Capital lease obligations payable monthly through 2017 USD ($)	Jun. 30, 2013 Secured senior term loan and revolving credit facility USD ($)	Jun. 30, 2013 Senior secured term loan credit facility USD ($)	Dec. 31, 2012 Senior secured term loan credit facility USD ($)	Apr. 30, 2013 Letter of credit USD ($)	May 31, 2013 Syndicated Loan [Member] Revolving credit facility USD ($)	May 31, 2013 Syndicated Loan [Member] Term Loan Facility USD ($)	May 31, 2013 Eurocurrency Syndicated Loan [Member] Term Loan Facility	May 31, 2013 Base rate Syndicated Loan [Member] Term Loan Facility	May 31, 2013 LIBOR Syndicated Loan [Member] Revolving credit facility
Debt Instrument
Long-term Debt and Capital Lease Obligations Current and Non-current	$ 1,459,391,000	$ 1,468,166,000	$ 0	$ 0	$ 556,590,000	[1]	$ 559,619,000	[1]	$ 250,000,000	$ 250,000,000	$ 346,118,000	[2]	$ 345,909,000	[2]	$ 300,000,000	$ 300,000,000		$ 6,602,000	$ 12,523,000	$ 81,000	$ 115,000
Less: debt payments due within one year	(10,269,000)	(16,458,000)
Long-term debt, net of current installments	1,449,122,000	1,451,708,000
Debt Instrument, interest rate, stated percentage									8.125%		9.25%				6.25%
Long-term debt, gross											350,000,000		350,000,000											559,730,000
Unamortized discount											3,882,000		4,091,000											111,000
Maximum borrowing capacity																						250,000,000				300,000,000
Amount outstanding																							556,590,000
Letters of credit outstanding, amount																							36,236,000
Amount available under credit facility																							213,764,000
Redeemed aggregate principal amount																	50,000,000
Reduction of letter of credit																									6,500,000
Term loan facility amount																											2,300,000,000
Basis spread on variable rate																												3.25%	2.25%	3.00%
Variable rate floor																												1.00%	2.00%
Debt discount, percentage																											0.50%
Debt issuance cost																											$ 1,800,000

[1] Total of $559,730 less amortization of a loan discount in the amount of $111 as of December 31, 2012.

[2] Total of $350,000 less amortization of a loan discount in the amount of $3,882 and $4,091 as of June 30, 2013 and December 31, 2012, respectively.