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Long term debt (Details Textual) (Loan Secured Through An Inter Creditor Agreement With The Republic Bank And Trust [Member], USD $)
12 Months Ended
Dec. 31, 2013
Loan Secured Through An Inter Creditor Agreement With The Republic Bank And Trust [Member]
 
Debt Instrument [Line Items]  
Debt Instrument, Interest Rate, Stated Percentage 5.95%
Debt Instrument, Periodic Payment $ 526,010
Debt Instrument, Maturity Date Aug. 04, 2016
Debt Instrument, Redemption Price, Percentage 1.50%