Accumulated Other Comprehensive (Loss) Income - Changes in Accumulated Other Comprehensive Income (Loss) (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Feb. 28, 2015	Feb. 28, 2014	Feb. 28, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ 752	$ (17,133)
Other comprehensive income (loss) before reclassifications	(25,651)	14,970
Amounts reclassified from accumulated other comprehensive income (loss)	496	2,915
Other comprehensive (loss) income, net of tax	(25,155)	17,885	(5,303)
Ending Balance	(24,403)	752	(17,133)
Foreign Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	25,139	12,594
Other comprehensive income (loss) before reclassifications	(23,303)	11,561
Amounts reclassified from accumulated other comprehensive income (loss)		984
Other comprehensive (loss) income, net of tax	(23,303)	12,545
Ending Balance	1,836	25,139
Pensions and Postretirement Benefits [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(24,387)	(29,731)
Other comprehensive income (loss) before reclassifications	(2,348)	3,413
Amounts reclassified from accumulated other comprehensive income (loss)	496	1,931
Other comprehensive (loss) income, net of tax	(1,852)	5,344
Ending Balance	(26,239)	(24,387)
Unrealized Investment Gain [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance		4
Other comprehensive income (loss) before reclassifications		(4)
Other comprehensive (loss) income, net of tax		$ (4)