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Stock-Based Compensation Summary of Restricted Stock Transactions (Details) - Restricted Stock
shares in Thousands
6 Months Ended
Jan. 31, 2020
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award  
Non-vested restricted stock outstanding, beginning balance | shares 414
Granted, number of shares | shares 21
Vested, number of shares | shares (41)
Forfeitures, number of shares | shares (2)
Non-vested restricted stock outstanding, ending balance | shares 392
Non-vested restricted stock outstanding, weighted average grant date fair value, beginning balance | $ / shares $ 33.09
Granted, weighted average grant date fair value | $ / shares 33.51
Vested, weighted average grant date fair value | $ / shares 32.34
Forfeitures, weighted average grant date fair value | $ / shares 33.51
Non-vested restricted stock outstanding, weighted average grant date fair value, ending balance | $ / shares $ 33.19