Quarterly report pursuant to Section 13 or 15(d)

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

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Stockholders' Equity (Details) - Schedule of share-based compensation expense by line item - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jan. 31, 2020
Jan. 31, 2019
Jan. 31, 2020
Jan. 31, 2019
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]        
Share-based Payment Arrangement $ 302 $ 291 $ 521 $ 526
Selling, General and Administrative Expenses [Member]        
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]        
Share-based Payment Arrangement $ 302 $ 291 $ 521 $ 526