Income Taxes (Reconciliation Of Unrecognized Tax Benefits) (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 Tax Contingency [Line Items]
Beginning balance at January 1, 2011 and June 1, 2010, respectively	$ 2,808	$ 42,840	$ 3,124	$ 0
Increases for tax positions related to prior years	0	282	0	0
Increases for tax positions related to the current year	882	719	228	0
Increases acquired in business acquisitions	13,340	0	0	3,124
Foreign currency translation	224	(215)	0	0
Reductions due to lapsed statute of limitations	(277)	(342)	(544)	0
Ending balance at December 31, 2011 and 2010, respectively	42,840	43,284	2,808	3,124
Coniston Transactions [Member]
Income Tax Contingency [Line Items]
Increases acquired in business acquisitions	$ 25,863	$ 0	$ 0	$ 0