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Share Repurchase Program (Details) - USD ($)
$ in Thousands
6 Months Ended
Jan. 31, 2024
Jan. 31, 2023
Jul. 31, 2023
Mar. 07, 2023
Dec. 04, 2015
Jul. 16, 2008
Mar. 09, 2006
Accelerated Share Repurchases [Line Items]              
Number of shares authorized to repurchase 10,000,000           3,000,000
Additional number of shares authorized to repurchase       2,500,000 1,500,000 3,000,000  
Number of shares repurchased since inception 8,885,358 6,466,000 8,648,000        
Value of stock repurchased since inception $ 1,029,500            
Remaining shares available for repurchase under existing program 1,114,642            
Treasury Stock, Shares, Acquired 237,056            
Payments for Repurchase of Common Stock $ 50,000 $ 0