Supplemental Disclosure of Cash Flow Information (Details) (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Supplemental Disclosure of Cash Flow Information [Abstract]
Interest paid	$ 63,097	$ 67,219
Income taxes paid	2,070	1,413
Write-off of deferred costs	1,414	2,022
Acquisition of assets, net of related payables and cash received [Abstract]
Property, plant and equipment and leasehold intangibles, net	50,350	19,900
Other intangible assets, net	4,158	2,004
Accrued expenses	0	(95)
Net	$ 54,508	$ 21,809