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Stock-Based Compensation (Stock Options) (Details) - USD ($) | 12 Months Ended
--- | ---
Jul. 31, 2021 | Jul. 31, 2020 | Jul. 31, 2019
Awards (In Shares) |  |  |
Outstanding, Beginning Balance (in shares) | 1,422,025 | 1,555,555 | 1,668,975
Granted (in shares) | 0 | 327,100 | 0
Expired/canceled (in shares) | (348,590) | (174,840) | (32,490)
Exercised (in shares) |  | (285,790) | (80,930)
Outstanding, Ending Balance (in shares) | 1,073,435 | 1,422,025 | 1,555,555
Exercisable, Ending Balance (in shares) | 835,755 |  |
Vested and Expected to Vest, Ending Balance (in shares) | 1,060,830 |  |
Weighted Average Exercise Price (Per Share) |  |  |
Outstanding, Beginning Balance (in dollars per share) | $ 26.17 | $ 28.72 | $ 28.72
Granted (in dollars per share) |  | 17.88 |
Expired/canceled (in dollars per share) | 27.44 | 29.06 | 30.11
Exercised (in dollars per share) |  | 28.82 | 28.18
Outstanding, Ending Balance (in dollars per share) | 25.76 | $ 26.17 | $ 28.72
Exercisable, Ending Balance (in dollars per share) | 28.00 |  |
Vested and Expected to Vest, Ending Balance (in dollars per share) | $ 25.85 |  |
Weighted Average Remaining Contractual Term (Years) |  |  |
Outstanding, Ending Balance | 4 years 3 months 21 days |  |
Exercisable, Ending Balance | 3 years 10 days |  |
Vested And Expected To Vest, Ending Balance | 4 years 3 months 3 days |  |
Aggregated Intrinsic Value |  |  |
Outstanding, Ending Balance | $ 2,178,000 |  |
Exercisable, Ending Balance | 492,000 |  |
Vested and Expected to Vest, Ending Balance | $ 2,088,000 |  |
Additional Disclosures |  |  |
Exercise price, lower range limit (in dollars per share) | $ 17.88 |  |
Exercise price, upper range limit (in dollars per share) | $ 33.94 |  |
Stock options |  |  |
Additional Disclosures |  |  |
Contractual term (in years) | 10 years |  |
Vesting period (in years) | 5 years |  |
Total intrinsic value relating to stock-based awards exercised during the period | $ 0 | $ 1,869,000 | $ 576,000
Vested stock-based awards net settled upon exercise (in shares) |  | 269,090 | 72,830
Common stock issued for net settlement of stock-based awards (in shares) |  | 27,994 | 9,345
Weighted average grant-date fair value (in dollars per share) |  | $ 5.52 |
Expected dividend yield (as a percent) |  | 2.24% |
Expected volatility (as a percent) |  | 40.03% |
Risk-free interest rate (as a percent) |  | 0.54% |
Expected life |  | 6 years 6 months |

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