XML 79 R64.htm IDEA: XBRL DOCUMENT v3.20.1
Other Operating Expense, Net (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jan. 31, 2020
Jan. 31, 2019
Jan. 31, 2020
Jan. 31, 2019
Jul. 31, 2019
Other Operating Expense, Net (Textual)          
Accrual for non-income related taxes         $ 8,000
Straight Path [Member]          
Other Operating Expense, Net (Textual)          
Recorded insurance proceeds $ 400   $ 800    
Legal fees $ 600 $ 300 $ 1,200 $ 500