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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - shares
Feb. 28, 2019
Aug. 31, 2018
Treasury Stock, Shares 20,439,434 20,439,434
Common Class A    
Common Stock, Shares Authorized 168,000,000 168,000,000
Common Stock, Shares, Issued 81,831,531 81,423,584