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Long Term Debt (Tables)
12 Months Ended
Jul. 31, 2021
Debt Disclosure [Abstract]  
Schedule of minimum future annual principal payments
July 31,  Total 
2022  $152 
2023   160 
2024   167 
2025   606 
2026   186 
Thereafter   3,290 
Total principal payments   4,561 
Less: current portion, included in other current liabilities and other short term debt   (152)
unamortized mortgage cost   (53)
Long term debt - net  $4,356