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Fair Value Measurements (Details) - Schedule of balance of assets and liabilities measured at fair value on a recurring basis - USD ($)
$ in Thousands
Jul. 31, 2021
Jul. 31, 2020
Assets:    
Foreign exchange forward contracts   $ 10
Liabilities:    
Foreign exchange forward contracts $ 54
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]    
Assets:    
Foreign exchange forward contracts
Liabilities:    
Foreign exchange forward contracts
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]    
Assets:    
Foreign exchange forward contracts
Liabilities:    
Foreign exchange forward contracts
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]    
Assets:    
Foreign exchange forward contracts   10
Liabilities:    
Foreign exchange forward contracts $ 54