Components of Income Taxes (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Feb. 25, 2017	Nov. 26, 2016	Aug. 27, 2016	May 28, 2016	Feb. 27, 2016	Nov. 28, 2015	Aug. 29, 2015	May 30, 2015	Feb. 25, 2017	Feb. 27, 2016	Feb. 28, 2015
Currently payable:
Federal									$ 9,422	$ 13,553	$ 21,055
State									1,115	579	1,713
Current Income Tax Expense (Benefit), Total									10,537	14,132	22,768
Deferred:
Federal									6,944	533	20,567
State									1,279	(1,103)	1,856
Deferred Income Tax Expense (Benefit), Total									8,223	(570)	22,423
Total income tax expense	$ 7,919	$ (8,332)	$ 13,627	$ 5,546	$ 2,444	$ (13,389)	$ 15,707	$ 8,800	$ 18,760	$ 13,562	$ 45,191