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 6 Months Ended
Jan. 31, 2018
Jan. 31, 2017
Jan. 31, 2018
Jan. 31, 2017
Stockholders' Equity (Details) - Schedule of share-based compensation expense [Line Items]        
Stock Based Compensation Expense $ 208 $ 241 $ 413 $ 392
Options [Member]        
Stockholders' Equity (Details) - Schedule of share-based compensation expense [Line Items]        
Stock Based Compensation Expense 205 236 407 382
Restricted Stocks [Member]        
Stockholders' Equity (Details) - Schedule of share-based compensation expense [Line Items]        
Stock Based Compensation Expense $ 3 $ 5 $ 6 $ 10