Quarterly report pursuant to Section 13 or 15(d)

Amortizable intangible assets -Estimated future annual amortization expense related to intangible assets (Details)

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Amortizable intangible assets -Estimated future annual amortization expense related to intangible assets (Details) (USD $)
Mar. 31, 2014
Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months $ 59,917  
Finite-Lived Intangible Assets, Amortization Expense, Year Two 124,575  
Finite-Lived Intangible Assets, Amortization Expense, Year Three 124,575  
Finite-Lived Intangible Assets, Amortization Expense, Year Four 124,575  
Finite-Lived Intangible Assets, Amortization Expense, Year Five 118,378  
Amortization of Intangible Assets 417,757  
Intangible assets, net $ 969,777 $ 953,327