CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended
	May 31, 2013	May 31, 2012
Statement Of Income And Comprehensive Income [Abstract]
Net earnings	$ 8,506	$ 3,879
Foreign currency translation adjustment, net of deferred taxes	150	(2,107)
Comprehensive income	$ 8,656	$ 1,772