Revenue Recognition (Details) - USD ($)	3 Months Ended		9 Months Ended
	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2023	Apr. 30, 2022	Jul. 31, 2022
Revenue from Contract with Customer [Abstract]
Contract with Customer, Liability	$ 2,737,000		$ 2,737,000		$ 2,675,000
Deferred Revenue, Revenue Recognized	$ 311,000	$ 297,000	$ 928,000	$ 882,000
Remaining Performance Obligations Expected as Revenue During the Remainder of the Current Fiscal Year	12.00%		12.00%
Remaining Performance Obligations Expected as Revenue Over the Next Full Fiscal Year	37.00%		37.00%