Long-Term Debt - Additional Information (Detail) (USD $)	12 Months Ended
	Feb. 28, 2015	Feb. 28, 2014	Sep. 19, 2013
Line of Credit Facility [Line Items]
Revolving credit facility, outstanding borrowings	106,500,000	$ 105,500,000
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Revolving credit facility, outstanding borrowings	106,500,000	105,500,000
Revolving credit facility, percentage of capital securities of direct foreign subsidiary	65.00%
Standby letters of credit [Member]
Line of Credit Facility [Line Items]
Revolving credit facility, outstanding borrowings	2,800,000
Revolving credit facility, remaining borrowing capacity	40,700,000
Third Amendment [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Revolving credit facility, initiation date	Sep. 19, 2013
Minimum tangible net worth, amount			100,000,000
Minimum tangible net worth percentage			25.00%
Second Amendment [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Revolving credit facility, maximum borrowing capacity	150,000,000
Revolving credit facility, additional borrowing capacity	200,000,000
Revolving credit facility, maturity date	Aug. 18, 2016
Revolving credit facility, interest rate description	London Interbank Offered Rate ("LIBOR") plus a spread ranging from 1.0% to 2.25%
Revolving credit facility, interest rate variable basis spread, option one	1.50%	1.70%
Revolving credit facility, interest rate variable basis spread, option two	1.75%
Second Amendment [Member] | Revolving Credit Facility [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Revolving credit facility, variable basis spread	1.00%
Second Amendment [Member] | Revolving Credit Facility [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Revolving credit facility, variable basis spread	2.25%