Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Net income	$ 5,008	$ 2,399
Other comprehensive income:
Unrealized gain on cash equivalents, marketable securities and restricted investment, net of tax benefit of $73 and $17	84	89
Unrealized gain (loss) on hedge contracts, net of tax benefit of $98 and $4	(158)	5
Cumulative translation adjustments	(1,074)	0
Other comprehensive income	(1,148)	94
Comprehensive income	$ 3,860	$ 2,493