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Stock Option Plan and Stock Based Compensation - Summary of Stock Options Exercised and Tax Benefits Realized from Stock Based Compensation (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Feb. 28, 2014
Feb. 28, 2013
Feb. 29, 2012
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]      
Total cash received $ 94 $ 85 $ 217
Income tax (expense) benefit 17 66 63
Total grant-date fair value 50 13 54
Intrinsic value $ 117 $ 54 $ 200