Segment Information (Disaggregation Of Revenue By Geographic Region) (Details) - USD ($) $ in Thousands	3 Months Ended
Nov. 30, 2020	Nov. 30, 2019
Disaggregation of Revenue [Line Items]
Revenue	$ 48,324	$ 58,613
Americas [Member]
Disaggregation of Revenue [Line Items]
Revenue	38,327	44,036
Asia Pacific [Member]
Disaggregation of Revenue [Line Items]
Revenue	3,191	10,139
Europe/Middle East/Africa [Member]
Disaggregation of Revenue [Line Items]
Revenue	$ 6,806	$ 4,438

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details