Quarterly report pursuant to Section 13 or 15(d)

Earnings per Share and Shareholders' Equity Share Repurchase (Details)

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Earnings per Share and Shareholders' Equity Share Repurchase (Details) - USD ($)
$ in Thousands
3 Months Ended
Nov. 30, 2019
Aug. 31, 2019
Equity [Abstract]    
Treasury Stock, Shares 22,295,357 21,455,568
Stock Repurchase Program, Authorized Amount $ 658,000  
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased 5,704,643  
Stock Repurchased During Period, Shares 839,789  
Stock Repurchases $ 17,805