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Operating Leases (Details) (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Operating Leases [Abstract]    
2013 $ 1,130,851  
2014 909,323  
2015 617,619  
2016 466,109  
2017 164,167  
Thereafter     
Operating Leases, Future Minimum Payments Due, Total 3,288,069  
Future rental payment amount for 2014 7,500  
Rent expenses $ 1,087,329 $ 317,386