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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
Oct. 31, 2020
Jul. 31, 2020
Assets:    
Foreign exchange forward contracts   $ 10
Liabilities:    
Foreign exchange forward contracts $ 41  
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member]    
Assets:    
Foreign exchange forward contracts [1]
Liabilities:    
Foreign exchange forward contracts [1]
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member]    
Assets:    
Foreign exchange forward contracts [2] 10
Liabilities:    
Foreign exchange forward contracts [2] 41  
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member]    
Assets:    
Foreign exchange forward contracts [3]
Liabilities:    
Foreign exchange forward contracts [3]
[1] quoted prices in active markets for identical assets or liabilities
[2] observable inputs other than quoted prices in active markets for identical assets and liabilities
[3] no observable pricing inputs in the market