Summary of Stock Option Grants (Detail) - $ / shares	12 Months Ended
	Mar. 03, 2018	Feb. 25, 2017	Feb. 27, 2016
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Options Outstanding, Shares, Beginning Balance	124,800	1,210,548	1,448,548
Options granted, Shares	320,469	23,000	15,500
Options exercised, Shares		(966,500)	(77,500)
Options cancelled or expired, Shares	(40,000)	(142,248)	(176,000)
Options Outstanding, Shares, Ending Balance	405,269	124,800	1,210,548
Options outstanding, Weighted Average Exercise Price, Beginning Balance	$ 8.50	$ 7.34	$ 8.09
Options granted, Weighted Average Exercise Price	6.68	6.99	14.04
Options exercised, Weighted Average Exercise Price		6.71	7.46
Options cancelled or expired, Weighted Average Exercise Price	7.77	10.57	14.06
Options outstanding, Weighted Average Exercise Price, Ending Balance	7.13	8.50	7.34
Options granted, Weighted Average Fair Value at Date of Grant	$ 3.21	$ 2.85	$ 3.98
Options outstanding, Exercisable Shares, Number of Shares, Beginning Balance	107,800	1,176,974	1,419,712
Options outstanding, Exercisable Shares, Number of Shares, Ending Balance	73,250	107,800	1,176,974
Options outstanding, Exercisable Shares, Weighted Average Exercise Price, Beginning Balance	$ 8.22	$ 7.06	$ 7.86
Options outstanding, Exercisable Shares, Weighted Average Exercise Price, Ending Balance	$ 8.76	$ 8.22	$ 7.06