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CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Aug. 31, 2020	Aug. 31, 2019
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ (9,597)	$ (8,403)
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	129,060,664	129,060,664
Common stock, shares outstanding	119,220,905	117,924,938
Treasury stock, shares	9,839,759	11,135,726

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Amount of allowance for credit loss on accounts receivable, classified as current.

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