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Financing Arrangements - Future Maturities (Details) - USD ($)
Jun. 30, 2015
Dec. 31, 2014
Dec. 31, 2013
Financing Arrangements      
2015   $ 2,070,217  
2016 $ 2,374,485 2,374,486  
Thereafter   192,000  
Total debt, net $ 4,706,257 $ 4,636,703 $ 7,103,925