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Basis Of Presentation (Details) - d | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Basis of Presentation [Abstract] |  |  |  |
Live Racing Days | 57 | 60 | 176 | 175

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