Stock Option Plan and Stock Based Compensation - Stock Option Activity (Detail) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended
	Nov. 30, 2016	Mar. 01, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Number of Shares, Options Outstanding, Beginning Balance	370,949
Number of Shares, Granted	0
Number of Shares, Terminated	(5,000)
Number of Shares, Exercised	(193,453)
Number of Shares, Options Outstanding, Ending Balance	172,496
Weighted Average Exercise Price, Beginning Balance	$ 15.38
Weighted Average Exercise Price, Granted	0
Weighted Average Exercise Price, Terminated	8.94
Weighted Average Exercise Price, Exercised	15.04
Weighted Average Exercise Price, Ending Balance	$ 15.95
Weighted Average Remaining Contractual Life, Ending Balance	4 years 6 months
Aggregate Intrinsic Value	$ 208	$ 1,616
Number of Shares, Exercisable	167,423
Weighted Average Exercise Price, Exercisable	$ 16
Weighted Average Remaining Contractual Life, Exercisable	4 years 4 months 24 days
Aggregate Intrinsic Value, Exercisable	$ 199