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Summary of Significant Accounting Policies (Allocation Of Stock-Based Compensation Expense) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Jul. 31, 2020 | Jul. 31, 2019 | Jul. 31, 2018
Pre-tax stock-based compensation expense | $ 21,021 | $ 19,856 | $ 19,040
Less: benefit for income taxes | 5,027 | 4,589 | 5,406
Net stock-based compensation expense | 15,994 | 15,267 | 13,634
Mountain Operating Expense [Member] |  |  |
Pre-tax stock-based compensation expense | 17,410 | 16,474 | 15,716
Lodging Operating Expense [Member] |  |  |
Pre-tax stock-based compensation expense | 3,399 | 3,219 | 3,215
Real Estate Operating Expense [Member] |  |  |
Pre-tax stock-based compensation expense | $ 212 | $ 163 | $ 109

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