Capital Stock (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Nov. 30, 2020	Nov. 30, 2019
Earnings Per Share [Abstract]
Net (Loss) Earnings from Continuing Operations	$ 4,822	$ 6,372
Net (Loss) Earnings from Discontinued Operations	(224)	(4,251)
Net (loss) earnings	$ 4,598	$ 2,121
Weighted average common shares outstanding - basic	59,811	60,081
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	281	520
Weighted Average Common Shares outstanding - diluted	60,092	60,601
(Loss) Earnings per share from Continuing Operations, Per Basic Share	$ 0.08	$ 0.11
(Loss) Earnings per share from Continuing Operations, Per Diluted Share	0.08	0.11
(Loss) Earnings per share from Discontinued Operations, Per Basic Shares	(0.00)	(0.07)
(Loss) Earnings per share from Discontinued Operations, Per Diluted Share	(0.00)	(0.07)
Earnings Per Share, Basic	0.08	0.04
(Loss) Earnings Per Share, Diluted	$ 0.08	$ 0.03
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)	1,490	1,068