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Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2013
Accounting Policies [Abstract]  
Estimated Useful Lives
The cost of assets is depreciated using the straight-line method based on the following estimated useful lives:

 

Land improvements

      10-40 years   

Buildings

      5-40 years   

Rides, attractions and equipment

      3-20 years   

Animals

      1-50 years