Basis Of Presentation And Significant Accounting Policies (Schedule Of Reimbursements Revenue) (Details) (USD $) In Thousands, unless otherwise specified	7 Months Ended	12 Months Ended
	Dec. 31, 2010	Dec. 31, 2011	May 31, 2010	May 31, 2009
Basis Of Presentation And Significant Accounting Policies [Abstract]
Reimbursements for out-of-pocket expenses incurred as professional services revenue	$ 6,700	$ 20,788	$ 4,777	$ 4,074