Income Taxes (Recognized Interest And Penalties Related To Uncertain Tax Positions) (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
Income Taxes [Abstract]
Interest and penalties included in provision for income taxes	$ 473	$ 1,174	$ 0	$ 0

- Definition

This element represents the total of interest expense recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity and the amount of statutory penalties in the period in which the entity claims or expects to claim a tax position, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties.

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