Long-Term Debt - Additional Information (Detail) (USD $)						6 Months Ended		6 Months Ended		6 Months Ended
	Aug. 31, 2014	Feb. 28, 2014	Aug. 31, 2014 Revolving Credit Facility [Member]	Feb. 28, 2014 Revolving Credit Facility [Member]	Aug. 31, 2014 Standby letters of credit [Member]	Aug. 31, 2014 Third Amendment [Member] Revolving Credit Facility [Member]	Sep. 19, 2013 Third Amendment [Member] Revolving Credit Facility [Member]	Aug. 31, 2014 Second Amendment [Member] Revolving Credit Facility [Member]	Aug. 31, 2013 Second Amendment [Member] Revolving Credit Facility [Member]	Aug. 31, 2014 Second Amendment [Member] Revolving Credit Facility [Member] Minimum [Member]	Aug. 31, 2014 Second Amendment [Member] Revolving Credit Facility [Member] Maximum [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%
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, variable basis spread										1.00%	2.25%
Revolving credit facility, interest rate variable basis spread, option one								1.50%	1.43%
Revolving credit facility, interest rate variable basis spread, option two								1.70%
Revolving credit facility, outstanding borrowings	104,000,000	105,500,000	104,000,000	105,500,000	3,300,000
Revolving credit facility, remaining borrowing capacity					$ 42,700,000
Revolving credit facility, percentage of capital securities of direct foreign subsidiary			65.00%