Long Term Debt (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Long term debt for the Company
Senior secured credit facility, variable rate of 6.50% (weighted average rate of 6.50%) at June 30, 2012, due 2016	$ 995,000	$ 1,000,000
Less current portion	(10,000)	(10,000)
Long-term debt, net of current portion	$ 985,000	$ 990,000