Stock Option Plan and Stock Based Compensation - Stock Option Activity (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Feb. 28, 2017	Feb. 29, 2016	Feb. 28, 2015	Feb. 28, 2014	Mar. 01, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Number of Shares, Options Outstanding, Beginning Balance	370,949	374,823	369,405
Number of Shares, Granted	0	43,426	31,418
Number of Shares, Terminated	(5,000)	(47,300)	(20,000)
Number of Shares, Exercised	(193,453)		(6,000)
Number of Shares, Options Outstanding, Ending Balance	172,496	370,949	374,823	369,405
Weighted Average Exercise Price, Beginning Balance	$ 15.38	$ 15.95	$ 15.86
Weighted Average Exercise Price, Granted		13.69	15.78
Weighted Average Exercise Price, Terminated	8.94	18.31	16.21
Weighted Average Exercise Price, Exercised	15.04		8.94
Weighted Average Exercise Price, Ending Balance	$ 15.95	$ 15.38	$ 15.95	$ 15.86
Weighted Average Remaining Contractual Life, Ending Balance	4 years 2 months 12 days	5 years 10 months 24 days	5 years 8 months 12 days	6 years
Aggregate Intrinsic Value	$ 223	$ 1,616	$ 210		$ 416
Number of Shares, Exercisable	167,423
Weighted Average Exercise Price, Exercisable	$ 16
Weighted Average Remaining Contractual Life, Exercisable	4 years 1 month 6 days
Aggregate Intrinsic Value, Exercisable	$ 213