Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	May 27, 2017	Feb. 25, 2017	May 28, 2016
Statement of Financial Position [Abstract]
Cash and cash equivalents, temporary investments	$ 152,978	$ 149,375	$ 122,494
Properties and equipment, accumulated depreciation	$ 519,016	$ 505,555	$ 497,064
Common stock, par value	$ 0.001	$ 0.001	$ 0.001
Common stock, shares authorized	500,000,000	500,000,000	500,000,000
Common stock, shares issued	125,232,000	125,232,000	125,232,000
Treasury stock, shares	40,208,000	42,050,000	41,150,000