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Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2012
Commitments and Contingencies [Abstract]  
Future minimum payments to third parties for the next five years and thereafter

As of December 31, 2012, future minimum payments to third parties for the next five years and thereafter are summarized as follows:

 

         

2013

  $ 6,896,238  

2014

    2,428,301  

2015

    2,255,899  

2016

    1,910,004  

2017

    1,522,302  

Thereafter

    7,989,168  
   

 

 

 

Total

  $ 23,001,912