Schedule of Supplemental Disclosures Related to the Company's Operating Leases (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2022	Jan. 31, 2021
Leases
Operating lease cost	$ 687	$ 697	$ 1,387	$ 1,425
Short-term lease cost	253	130	600	195
Total lease cost	940	827	1,987	1,620
Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases	$ 670	$ 672	$ 1,365	$ 1,382