Calculation of Earnings Per Share Amounts (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended									12 Months Ended
	Mar. 03, 2018	[1]	Nov. 25, 2017	Aug. 26, 2017	May 27, 2017	Feb. 25, 2017	Nov. 26, 2016	Aug. 27, 2016	May 28, 2016	Mar. 03, 2018	Feb. 25, 2017	Feb. 27, 2016
Earnings Per Share Disclosure [Line Items]
Net income	$ 15,054		$ 7,381	$ (7,823)	$ (2,986)	$ 26,641	$ 13,577	$ (4,069)	$ (6,020)	$ 11,626	$ 30,129	$ 39,634
Basic	79,835		79,658	80,350	81,080	80,898	80,680	80,437	81,663	80,223	80,919	84,939
Diluted	79,854		79,658	80,350	81,080	81,156	80,683	80,437	81,663	80,254	80,984	85,370
Basic	$ 0.19		$ 0.09	$ (0.10)	$ (0.04)	$ 0.33	$ 0.17	$ (0.05)	$ (0.07)	$ 0.14	$ 0.37	$ 0.47
Diluted	$ 0.19		$ 0.09	$ (0.10)	$ (0.04)	$ 0.33	$ 0.17	$ (0.05)	$ (0.07)	$ 0.14	$ 0.37	$ 0.46
Employee Stock Option
Earnings Per Share Disclosure [Line Items]
Effect of dilutive stock										1	17	316
Restricted Stock Awards
Earnings Per Share Disclosure [Line Items]
Effect of dilutive stock										30	48	115

[1] The quarter ended March 3, 2018 consisted of 14 weeks, compared to 13 weeks for the quarter ended February 25, 2017