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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 5) (USD $)
Dec. 31, 2014
Dec. 31, 2013
Accounting Policies [Line Items]    
Carrying amount of long-term debt $ 42,044,477us-gaap_LongtermDebtPercentageBearingFixedInterestAmount $ 83,046,146us-gaap_LongtermDebtPercentageBearingFixedInterestAmount
Fair value of long-term debt $ 45,960,663us-gaap_LongTermDebtFairValue $ 85,855,343us-gaap_LongTermDebtFairValue