Operating Leases (Details) - Schedule of lease assets and liabilities - USD ($) $ in Thousands	Apr. 30, 2021	Mar. 31, 2021	Jul. 31, 2020
Schedule of lease assets and liabilities [Abstract]
Other assets	$ 283	$ 281,000
Other current liabilities	89		$ 232
Other liabilities	179		$ 64
Total operating lease liabilities	$ 268