Stock-Based Compensation (Narrative) (Details) $ in Millions	3 Months Ended
	Nov. 30, 2021 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock issued from treasury stock	216,752
Shares withheld for tax	85,095
Shares withheld for tax, fair value | $	$ 3.5
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Price of common stock as a percent of the average fair market value	85.00%
Shares issued to employee stock purchase plan participants	9,379