Income Taxes (Components of Income (Loss) Before Income Taxes and Minority Interest, and the (Benefit) Provision for Income Taxes) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011
Income (loss) before income taxes and minority interest:
Income (loss) before income taxes and minority interest, U.S.									$ (131,563)	$ (30,726)	$ (3,692)
Income (loss) before income taxes and minority interest, Foreign									8,387	31,477	24,008
(Loss) income before income taxes	(87,001)	(11,639)	(9,880)	(14,656)	(41)	7,587	(2,632)	(4,163)	(123,176)	751	20,316
Current
Income tax (benefit) provision, Current, U.S.									440	(825)	(268)
Income tax (benefit) provision, Current, Foreign									6,297	23,535	5,155
Income tax (benefit) provision, Current									6,737	22,710	4,887
Deferred
Income tax (benefit) provision, Deferred, U.S.									87,468	(9,809)	(1,311)
Income tax (benefit) provision, Deferred, Foreign									5,710	(68,104)	(10,072)
Income tax (benefit) provision, Deferred									93,178	(77,913)	(11,383)
Total (benefit) provision									$ 99,915	$ (55,203)	$ (6,496)