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Accounts Payable and Accrued Expenses - Schedule of Accounts Payable and Accrued Expenses (Details) - USD ($)
$ in Thousands
Jan. 31, 2019
Jul. 31, 2018
Payables and Accruals [Abstract]    
Accounts Payable $ 252 $ 417
Accrued Interest 1,223
Accrued Warranty 12 12
Accrued Other 32 7
Total $ 296 $ 1,659