Income (Loss) Per Share (Computation Of Income (Loss) Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Feb. 28, 2021	Feb. 29, 2020	Feb. 28, 2021	Feb. 29, 2020
Numerator for basic and diluted loss per share:
Net income (loss)	$ (46)	$ 1,097	$ (938)	$ 553
Denominator for basic and diluted loss per share:
Basic weighted average shares outstanding	14,082	13,841	14,029	13,911
Effect of dilutive securities:
Stock options and other stock-based awards		149		207
Diluted weighted average shares outstanding	14,082	13,990	14,029	14,118
EPS Calculations:
Net income (loss) per share: Basic and diluted	$ 0.00	$ 0.08	$ (0.07)	$ 0.04