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Line of Credit and Long Term Debt (Summary of Future Repayments on Long-term Debt) (Details) (USD $)
Jun. 30, 2013
Dec. 31, 2012
Future estimated remaining repayments on long-term debt for the fiscal years ending December 31:    
2013 $ 457,485  
2014 1,479,090  
2015 1,516,810  
2016 893,773  
2017 20,187  
2018 410,069  
Total $ 4,777,414 $ 6,021,473