Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Stock Options and Stock Awards (Details) - USD ($) $ in Thousands	12 Months Ended
	Feb. 27, 2021	Feb. 29, 2020	Mar. 02, 2019	Jul. 31, 2020
Stock options and stock award Plans
Stock-based compensation costs	$ 13,003	$ 16,087	$ 12,115
Shares of common stock available for grant	1,862,000			3,350
Maximum
Stock options and stock award Plans
Term of options	10 years
Performance based awards
Stock options and stock award Plans
Stock-based compensation costs	$ 3,278	$ (461)	$ (1,084)
2010 Omnibus Equity Plan
Stock options and stock award Plans
Shares of common stock authorized under stock-based compensation plans	1,750,000
2012 Omnibus Equity Plan
Stock options and stock award Plans
Shares of common stock authorized under stock-based compensation plans	1,425,000
2014 Omnibus Equity Plan
Stock options and stock award Plans
Shares of common stock authorized under stock-based compensation plans	2,900,000
2014 Omnibus Equity Plan \| Stock options \| Maximum
Stock options and stock award Plans
Shares of common stock authorized under stock-based compensation plans	1,250,000