Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Details) - Schedule of share-based compensation expense

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Stockholders' Equity (Details) - Schedule of share-based compensation expense - USD ($)
$ in Thousands
3 Months Ended
Oct. 31, 2019
Oct. 31, 2018
Stockholders' Equity (Details) - Schedule of share-based compensation expense [Line Items]    
Share-based compensation expense $ 219 $ 235
Options [Member]    
Stockholders' Equity (Details) - Schedule of share-based compensation expense [Line Items]    
Share-based compensation expense 218 232
Restricted Stocks [Member]    
Stockholders' Equity (Details) - Schedule of share-based compensation expense [Line Items]    
Share-based compensation expense $ 1 $ 3