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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
12 Months Ended
Feb. 29, 2016
Feb. 28, 2015
Feb. 28, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]      
Total cash received   $ 54 $ 94
Income tax (expense) benefit $ (46) (106) 17
Total grant-date fair value   9 50
Intrinsic value   $ 36 $ 117