Quarterly report pursuant to Section 13 or 15(d)

Revenue Recognition Disaggregation of Revenue (Details)

v3.20.1
Revenue Recognition Disaggregation of Revenue (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Feb. 29, 2020
Feb. 28, 2019
Feb. 29, 2020
Feb. 28, 2019
Disaggregation of Revenue [Line Items]        
Revenues $ 133,386 $ 159,788 $ 280,060 $ 318,340
Revenue Recognized at a Point in Time [Member]        
Disaggregation of Revenue [Line Items]        
Revenues 97,189 109,883 202,001 218,139
Transferred over Time [Member]        
Disaggregation of Revenue [Line Items]        
Revenues $ 36,197 $ 49,905 $ 78,059 $ 100,201