Debt (Schedule Of Interest Expense) (Details) (USD $) In Thousands, unless otherwise specified	7 Months Ended		12 Months Ended
	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2011	May 31, 2010	May 31, 2009
Debt [Abstract]
Interest expense	$ 7,796		$ 13,546	$ 1,481	$ 1,692
Debt cost amortization	1,891		5,264	512	470
Write off of unamortized deferred debt issuance costs	0		1,940	0	0
Total interest expense	$ 9,687	$ 1,302	$ 20,750	$ 1,993	$ 2,162