Supplemental Disclosure of Cash Flow Information (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Supplemental Disclosure of Cash Flow Information [Abstract]
Interest paid	$ 65,427	$ 63,097
Income taxes paid	1,650	2,070
Write-off of deferred costs	744	1,414
Acquisition of assets, net of related payables and cash received [Member]
Supplemental Schedule of Non-cash Operating, Investing, and Financing Activities [Abstract]
Cash and escrow deposits - restricted	3,313	0
Prepaid expenses and other current assets, net	(2,817)	0
Property, plant and equipment and leasehold intangibles, net	123,450	50,350
Other intangible assets, net	6,494	4,158
Other assets, net	(7,327)	0
Accrued expenses	(489)	0
Other liabilities	2,335	0
Long-term debt, less current portion	(15,000)	0
Net	109,959	54,508
Capital leases: [Member]
Supplemental Schedule of Non-cash Operating, Investing, and Financing Activities [Abstract]
Property, plant and equipment and leasehold intangibles, net	14,443	0
Long-term debt, less current portion	(14,443)	0
Net	$ 0	$ 0