Revenue Recognition (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jan. 31, 2023	Jan. 31, 2022	Jan. 31, 2023	Jan. 31, 2022	Jul. 31, 2022
Revenue from Contract with Customer [Abstract]
Contract with Customer, Liability	$ 2,728,000		$ 2,728,000		$ 2,675,000
Deferred Revenue, Revenue Recognized	$ 311,000	$ 296,000	$ 617,000	$ 585,000
Remaining Performance Obligations Expected as Revenue During the Remainder of the Current Fiscal Year	22.00%		22.00%
Remaining Performance Obligations Expected as Revenue Over the Next Full Fiscal Year	34.00%		34.00%