Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017	Feb. 29, 2016
Statement Of Income And Comprehensive Income [Abstract]
Net earnings	$ 32,905	$ 1,780	$ 35,736
Foreign currency translation adjustment, net of deferred taxes		9,940	(5,313)
Adjustment to pension, net of deferred taxes	1,680	2,084	225
Comprehensive income	$ 34,585	$ 13,804	$ 30,648