Capital Stock (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Feb. 28, 2022	Feb. 28, 2021	Feb. 28, 2022	Feb. 28, 2021
Earnings Per Share [Abstract]
Net (Loss) Earnings from Continuing Operations	$ 2,121	$ 3,584	$ 5,306	$ 8,406
Net (Loss) Earnings from Discontinued Operations	(900)	(402)	(1,297)	(626)
Net (loss) earnings	$ 1,221	$ 3,182	$ 4,009	$ 7,780
Weighted average common shares outstanding - basic	60,387	59,938	60,324	59,874
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	302	331	331	306
Weighted Average Common Shares outstanding - diluted	60,689	60,269	60,655	60,180
(Loss) Earnings per share from Continuing Operations, Per Basic Share	$ 0.04	$ 0.06	$ 0.09	$ 0.14
(Loss) Earnings per share from Continuing Operations, Per Diluted Share	0.03	0.06	0.09	0.14
(Loss) Earnings per share from Discontinued Operations, Per Basic Shares	(0.01)	(0.01)	(0.02)	(0.01)
(Loss) Earnings per share from Discontinued Operations, Per Diluted Share	(0.01)	(0.01)	(0.02)	(0.01)
Earnings Per Share, Basic	0.02	0.05	0.07	0.13
(Loss) Earnings Per Share, Diluted	$ 0.02	$ 0.05	$ 0.07	$ 0.13
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities from stock based compensation plans (excluded from earnings per share calculation)	1,037	932	941	1,211