Intangible Assets - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Nov. 30, 2013	Nov. 30, 2012
Finite-Lived Intangible Assets [Line Items]
Intangible assets, amortization expense	$ 150	$ 179
Minimum
Finite-Lived Intangible Assets [Line Items]
Intangible asset, expected life	5 years
Maximum
Finite-Lived Intangible Assets [Line Items]
Intangible asset, expected life	15 years