Supplemental Disclosure for Statement of Cash Flows (Details) - USD ($) $ in Thousands	9 Months Ended
	Apr. 30, 2023	Apr. 30, 2022
Supplemental Disclosure for Statement of Cash Flows [Abstract]
Interest paid	$ 204	$ 167
Right of use assets and liabilities	5	29
Right of use assets and operating lease liabilities	1,717
Tax on capital paid	$ 9	$ 120