Consolidated Statement of Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Feb. 28, 2014	Feb. 28, 2013	Feb. 29, 2012
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 50,522	$ 49,918	$ 57,198
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	12,545	(11,015)	(2,412)
Pension and postretirement benefit adjustments	5,344	5,712	(7,074)
Unrealized (loss) gain on securities	(4)		2
Other comprehensive income (loss), net of tax	17,885	(5,303)	(9,484)
Comprehensive income	$ 68,407	$ 44,615	$ 47,714