Stock Option and Stock Awards Plans (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 04, 2023	Feb. 26, 2022	Feb. 27, 2021	Jul. 31, 2022	Jul. 31, 2021	Jul. 31, 2020	Jun. 30, 2014	Jun. 30, 2012	Jun. 30, 2010
Stock Options and Stock Awards
Stock-based compensation costs (benefit)	$ 11,537	$ 13,050	$ 13,003
Shares of common stock available for grant	3,628			3,250
Maximum
Stock Options and Stock Awards
Term of options	10 years
Performance based awards
Stock Options and Stock Awards
Stock-based compensation costs (benefit)	$ (3,080)	$ 2,143	$ 3,278
2010 Omnibus Equity Plan
Stock Options and Stock Awards
Shares of common stock authorized under stock-based compensation plans									1,750
2012 Omnibus Equity Plan
Stock Options and Stock Awards
Shares of common stock authorized under stock-based compensation plans								1,425
2014 Omnibus Equity Plan
Stock Options and Stock Awards
Shares of common stock authorized under stock-based compensation plans							2,900
2014 Omnibus Equity Plan | Incentive Stock options | Maximum
Stock Options and Stock Awards
Shares of common stock authorized under stock-based compensation plans							1,250
Amended And Restated 2020 Omnibus Equity Plan
Stock Options and Stock Awards
Shares of common stock available for grant					4,562
Omnibus Equity Plan 2020
Stock Options and Stock Awards
Shares of common stock available for grant						3,350