Annual report pursuant to Section 13 and 15(d)

Other Expenses, Net (Details)

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Other Expenses, Net (Details) (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Other Income and Expenses [Abstract]      
Unrealized (gain) loss from derivatives $ (1,459,058) $ 98,027 $ 1,313,587
Interest expense, net of interest income 4,600,012 3,495,784 4,130,350
Amortization of deferred financing fees, net (731,689) (456,305) (1,061,782)
Other expenses, net $ 3,872,643 $ 4,050,116 $ 6,505,719