Quarterly report pursuant to Section 13 or 15(d)

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

v3.19.2
Stockholders' Equity (Details) - Schedule of share-based compensation expense - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Apr. 30, 2019
Apr. 30, 2018
Apr. 30, 2019
Apr. 30, 2018
Stockholders' Equity (Details) - Schedule of share-based compensation expense [Line Items]        
Share-based compensation expense $ 199 $ 204 $ 725 $ 617
Options [Member]        
Stockholders' Equity (Details) - Schedule of share-based compensation expense [Line Items]        
Share-based compensation expense 197 202 718 609
Restricted Stocks [Member]        
Stockholders' Equity (Details) - Schedule of share-based compensation expense [Line Items]        
Share-based compensation expense $ 2 $ 2 $ 7 $ 8