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Capital Lease and Other Obligations (Details) - USD ($)
Jul. 31, 2019
Jul. 31, 2018
Leases [Abstract]    
Net book value of the leased assets $ 864,000 $ 2,547,000
Blended interest rate 7.00%  
Capital lease assets, amount of buyout option per unit $ 1  
Fiscal 2020 789,000  
Total minimum lease payments 789,000  
Less: amounts representing interest 32,000  
Present value of net minimum lease payments 757,000  
Current portion of capital lease and other obligations 757,000 1,836,000
Non-current portion of capital lease and other obligations $ 0 $ 765,000