XML 49 R37.htm IDEA: XBRL DOCUMENT v3.10.0.1
Accounts Payable and Accrued Expenses - Schedule of Accounts Payable and Accrued Expenses (Details) - USD ($)
$ in Thousands
Jul. 31, 2018
Jul. 31, 2017
Payables and Accruals [Abstract]    
Accounts Payable $ 417 $ 403
Accrued Interest 1,223 1,003
Accrued Warranty 12 12
Accrued Other 7 7
Total $ 1,659 $ 1,425