Quarterly report pursuant to Section 13 or 15(d)

Revenue Recognition Disaggregation of Revenue (Details)

v3.20.4
Revenue Recognition Disaggregation of Revenue (Details) - USD ($)
$ in Thousands
3 Months Ended
Nov. 30, 2020
Nov. 30, 2019
Disaggregation of Revenue [Line Items]    
Revenues $ 119,430 $ 146,674
Revenue Recognized at a Point in Time [Member]    
Disaggregation of Revenue [Line Items]    
Revenues 86,780 104,812
Transferred over Time [Member]    
Disaggregation of Revenue [Line Items]    
Revenues $ 32,650 $ 41,862