Accounts Receivable and Allowance for Doubtful Receivables - Allowance for Doubtful Receivables (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Feb. 28, 2014	Feb. 28, 2013	Feb. 29, 2012
Receivables [Abstract]
Balance at beginning of period	$ 3,952	$ 4,403	$ 4,814
Bad debt expense	3,024	743	144
Recoveries	42	45	109
Accounts written off	(3,346)	(1,239)	(675)
Foreign currency translation			11
Balance at end of period	$ 3,672	$ 3,952	$ 4,403