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Net Income Per Common Share (Details) (USD $) Share data in Thousands, except Per Share data | 0 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 20, 2011 | Jul. 31, 2011 | Apr. 30, 2011 | Jan. 31, 2011 | Oct. 31, 2010 | Jul. 31, 2010 | Apr. 30, 2010 | Jan. 31, 2010 | Oct. 31, 2009 | Jul. 31, 2011 | Jul. 31, 2010 | Jul. 31, 2009
Net income attributable to Vail Resorts, Inc. |  | $ (53,906,000) | $ 76,867,000 | $ 54,551,000 | $ (43,023,000) | $ (41,921,000) | $ 72,789,000 | $ 40,690,000 | $ (41,173,000) | $ 34,489,000 | $ 30,385,000 | $ 48,950,000
Weighted-average shares outstanding, basic |  |  |  |  |  |  |  |  |  | 36,009 | 36,212 | 36,546
Effect of dilutive securities, diluted |  |  |  |  |  |  |  |  |  | (745) | 519 | 127
Weighted-average shares outstanding, diluted |  |  |  |  |  |  |  |  |  | (36,754) | 36,731 | 36,673
Basic net income per share attributable to Vail Resorts, Inc. |  | $ (1.49) | $ 2.13 | $ 1.52 | $ (1.20) | $ (1.16) | $ 2.01 | $ 1.12 | $ (1.14) | $ 0.96 | $ 0.84 | $ 1.34
Diluted net income per share attributable to Vail Resorts, Inc. |  | $ (1.49) | $ 2.08 | $ 1.48 | $ (1.20) | $ (1.16) | $ 1.98 | $ 1.11 | $ (1.14) | $ 0.94 | $ 0.83 | $ 1.33
Anti-dilutive securities |  |  |  |  |  |  |  |  |  | 57,000 | 22,000 | 795,000
Cash dividends declared per share | $ 0.15 | $ 0.15 |  |  |  |  |  |  |  | $ 0.15 |  |
Cash dividend, aggregate |  | 5,400,000 |  |  |  |  |  |  |  |  |  |
Estimated annual dividend amount |  | 0.60 |  |  |  |  |  |  |  |  |  |
Parent Company [Member] |  |  |  |  |  |  |  |  |  |  |  |
Net income attributable to Vail Resorts, Inc. |  |  |  |  |  |  |  |  |  | $ 34,489,000 | $ 30,385,000 | $ 48,950,000

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