Long-Term Debt (Details) In Thousands, unless otherwise specified		6 Months Ended					3 Months Ended	6 Months Ended	12 Months Ended	6 Months Ended
	Jun. 30, 2011 USD ($)	Jun. 30, 2011 Global Draw Promissory Notes GBP (£)	Jun. 30, 2011 7.875% senior subordinated notes due, 2016 USD ($)	Jun. 30, 2011 8.125% senior subordinated notes due 2018 USD ($)	Jun. 30, 2011 9.25% senior subordinated notes due, 2019 USD ($)	Jun. 30, 2011 China Loans CNY	Jun. 30, 2011 Secured senior term loan and revolving credit facility USD ($)	Jun. 30, 2011 Secured senior term loan and revolving credit facility USD ($)	Jun. 30, 2012 Secured senior term loan and revolving credit facility USD ($)	Jun. 30, 2011 Senior secured revolving credit facility USD ($)	Jun. 30, 2011 Senior secured term loan credit facility USD ($)
Debt Instrument
Maximum borrowing capacity										$ 250,000
Minimum debt outstanding under the credit agreement terms, for share in EBITDA to be included in consolidated EBITDA								25,000
Maximum EBITDA from joint ventures to be included in determining compliance with debt agreement								30,000	25,000
Period over which to measure amount of EBITDA from joint ventures to be included in determining compliance with debt agreement								4
Minimum unrestricted cash and cash equivalents, to be netted against consolidated total debt to determine consolidated leverage ratio and consolidated senior debt ratio							15,000
Maximum unrestricted cash and cash equivalents, to be netted against consolidated total debt to determine consolidated leverage ratio and consolidated senior debt ratio							100,000
Outstanding Debt and Capital Leases	1,390,814		200,000	250,000	345,365	178,500					566,409
Loans repaid		628
Debt Instrument, interest rate, stated percentage (as a percent)			7.875%	8.125%	9.25%
Additional maximum aggregate amount										196,604
Remaining outstanding amount										53,396
Outstanding debt maturing in December 2012						116,000
Outstanding debt maturing in January 2013						62,500