Quarterly report pursuant to Section 13 or 15(d)

Revenue Recognition Disaggregation of Revenue (Details)

v3.21.1
Revenue Recognition Disaggregation of Revenue (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Feb. 28, 2021
Feb. 29, 2020
Feb. 28, 2021
Feb. 29, 2020
Disaggregation of Revenue [Line Items]        
Revenues $ 120,654 $ 133,386 $ 240,084 $ 280,060
Revenue Recognized at a Point in Time [Member]        
Disaggregation of Revenue [Line Items]        
Revenues 90,726 97,189 177,506 202,001
Transferred over Time [Member]        
Disaggregation of Revenue [Line Items]        
Revenues $ 29,928 $ 36,197 $ 62,578 $ 78,059