Consolidated Statements of Comprehensive (Loss) Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011	Dec. 31, 2010
Statement Of Income And Comprehensive Income Abstract
Net income (loss)	$ 8,515	$ (39,639)	$ 17,970	$ (38,493)
Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent Abstract
Foreign currency translation adjustments	(3,597)	(193)	(8,047)	1,122
Change in derivatives qualifying as hedges, net of deferred tax expense of $(3), $17, $(3), and $154	(36)	32	36	286
Unrealized holding gain (loss) arising during the period, net of deferred taxes of $0 for all periods	610	(331)	198	413
Reclassification adjustment for gain included in net income, net of deferred tax expense of $0 for all periods	32	90	157	299
Total Adjustments	642	(241)	355	712
Total other comprehensive (loss) income	(2,991)	(402)	(7,656)	2,120
Comprehensive Income Net Of Tax	$ 5,524	$ (40,041)	$ 10,314	$ (36,373)