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Transaction with the Newport Funds (Details) (USD $)
12 Months Ended
Dec. 31, 2007
NGOF
Aug. 31, 2014
Newport
Feb. 28, 2014
Newport
Related Party Transaction [Line Items]      
Interest payment received $ 5,118,172    
Preferred dividends received 61,600    
Due to the Newport Funds   $ 3,590,828 $ 3,450,793