Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2011
Net Income (Loss) Attributable to Parent	$ 48,097	$ 33,649	$ 118,596	$ 91,944
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	(3)	132	(20)	(122)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	(184)	(269)	(543)	(809)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	2,269	(9,823)	(2,964)	(23,776)
total comprehensive income loss net of tax	(2,082)	9,960	3,527	24,707
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ 50,179	$ 23,689	$ 115,069	$ 67,237