Business Segment Data (Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 04, 2017	Nov. 26, 2016	Aug. 27, 2016	May 28, 2016	Feb. 27, 2016	Nov. 28, 2015	Aug. 29, 2015	May 30, 2015	Mar. 04, 2017	Feb. 27, 2016	Feb. 28, 2015
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 314,126	$ 274,072	$ 278,455	$ 247,880	$ 262,149	$ 238,324	$ 240,754	$ 239,962	$ 1,114,533	$ 981,189	$ 933,936
Long-Lived Assets	246,748				202,462				246,748	202,462	193,540
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									1,031,214	923,018	847,887
Long-Lived Assets	227,145				189,624				227,145	189,624	178,048
CANADA
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									65,958	39,324	50,807
Long-Lived Assets	13,303				7,162				13,303	7,162	8,214
Brazil
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									17,361	18,847	35,242
Long-Lived Assets	$ 6,300				$ 5,676				$ 6,300	$ 5,676	$ 7,278