Equity (Details Narrative) - USD ($)				6 Months Ended
	Jan. 05, 2022	Dec. 15, 2021	Jan. 05, 2021	Jan. 31, 2022	Jan. 31, 2021
Class of Stock [Line Items]
Stock repurchase program, remaining number of shares authorized to be repurchased				5,800,000
Proceeds from exercise of stock options					$ 686,000
Number of common stock options exercise				0	81,041
Common Class B [Member]
Class of Stock [Line Items]
Additional number of shares authorized		175,000
Common Class B [Member] | Deferred Stock Units [Member]
Class of Stock [Line Items]
Number of vested shares	301,296		283,838
Class B Common Stock [Member]
Class of Stock [Line Items]
Aggregate repurchased shares				8,000,000.0
Class B common stock shares repurchased				0	463,792
Aggregate purchase price of shares repurchased					$ 2,800,000
Class B Common Stock [Member] | Employees [Member]
Class of Stock [Line Items]
Class B common stock shares repurchased				200,438	109,381
Aggregate purchase price of shares repurchased				$ 9,000,000.0	$ 1,300,000