CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Tax	$ 89	$ 117	$ 267	$ 351
Net Income (Loss) Attributable to Parent	28,506	48,097	90,566	118,596
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	157	(3)	252	(20)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	(140)	(184)	(419)	(543)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	945	2,269	8,244	(2,964)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	962	2,082	8,077	(3,527)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ 29,468	$ 50,179	$ 98,643	$ 115,069