Consolidated Statements of Comprehensive (Loss) 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
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)	$ 9,579	$ 8,515	$ 26,267	$ 17,970
Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent [Abstract]
Foreign currency translation adjustments	2,604	(3,597)	40	(8,047)
Change in derivatives qualifying as hedges, net of deferred tax expense of $(3), $17, $(3), and $154	(138)	(36)	326	36
Unrealized holding gain (loss) arising during the period, net of deferred taxes of $0 for all periods	194	610	(489)	198
Reclassification adjustment for gain included in net income, net of deferred tax expense of $0 for all periods	(253)	32	(400)	157
Total Adjustments	(59)	642	89	355
Total other comprehensive (loss) income	2,407	(2,991)	277	(7,656)
Comprehensive Income Net Of Tax	$ 11,986	$ 5,524	$ (25,990)	$ 10,314