CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Cash and cash equivalents	$ 88,975	$ 95,821
Receivables, net	29,551	27,446
Intangible assets	207,367	214,092
Other assets, net	52,261	50,233
Current portion of long-term debt	13,799	16,380
Accrued expenses and other current liabilities	93,294	92,162
Long-term debt, less current portion	2,151,842	2,178,847
Consolidated Variable Interest Entity
Cash and cash equivalents	9	12
Receivables, net	2,348	2,863
Intangible assets	57,403	62,503
Other assets, net	0	282
Current portion of long-term debt	0	38
Accrued expenses and other current liabilities	682	402
Long-term debt, less current portion	$ 0	$ 244
Voting units
Members' / stockholders' equity units issued (in units)	100	100
Members' / stockholders' equity units outstanding (in units)	100	100
Non-voting units
Members' / stockholders' equity units issued (in units)	100	100
Members' / stockholders' equity units outstanding (in units)	100	100