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CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
$ in Millions
Feb. 28, 2022
Aug. 31, 2021
Current assets:    
Allowance for doubtful accounts $ 1.2 $ 1.2
Stockholders’ equity:    
Preferred stock, par value (in dollars per share) $ 0.01 $ 0.01
Preferred stock, shares authorized (in shares) 50,000,000 50,000,000
Preferred stock, shares issued (in shares) 0 0
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, shares authorized (in shares) 500,000,000 500,000,000
Common stock, shares issued (in shares) 54,199,410 54,018,978
Treasury stock, shares (in shares) 19,425,436 18,826,611