SHAREHOLDERS’ EQUITY - Dividends declared and paid (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jul. 30, 2022	Jul. 31, 2021
Aggregate:
Total common stock dividends paid	$ 13,041	$ 13,050
Class A Common Stock
Per share:
Common stock dividends paid (in dollars per share)	$ 1.00	$ 1.00
Aggregate:
Common stock dividends paid	$ 10,250	$ 10,259
Class B Common Stock
Per share:
Common stock dividends paid (in dollars per share)	$ 0.65	$ 0.65
Aggregate:
Common stock dividends paid	$ 2,791	$ 2,791