Quarterly report pursuant to Section 13 or 15(d)

Long term debt (Details) - Schedule of minimum future annual principal payments

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Long term debt (Details) - Schedule of minimum future annual principal payments - USD ($)
$ in Thousands
Apr. 30, 2021
Jul. 31, 2020
Schedule of minimum future annual principal payments [Abstract]    
2021 $ 7,037  
2022 152  
2023 160  
2024 167  
2025 603  
Thereafter 3,476  
Total principal payments 11,595  
Less: current portion, included in other current liabilities and other short term debt (7,150)  
Unamortized mortgage cost (55)  
Long term debt - net $ 4,390 $ 4,485