Disclosure of AOCI (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012	Dec. 31, 2011
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax	$ 0	$ (63)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(9,332)		(3,254)
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, Tax	5	(482)
Other Comprehensive Income (Loss), Foreign Currency Translation Gain (Loss) Arising During Period, Tax	0	0
Successor [Member]
Unrealized Gains (Losses) On Cash Flow Hedges		1,000	(5)	1,545
Changes in Fair Value On Cash Flow Hedges, Net of Tax		(63)
Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	5	(482)
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax	(9,332)	(4,708)	(3,249)	(9,162)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	(6,083)	4,454
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ (9,332)	$ (3,708)