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Significant Accounting Policies (Details) (USD $)
Dec. 31, 2012
Dec. 31, 2011
Level 1 Inputs [Member]
   
Summary of investments values based upon Level 1 and Level 2    
Value of Investment $ 16,922,720 $ 10,480,353
Level 2 Inputs [Member]
   
Summary of investments values based upon Level 1 and Level 2    
Value of Investment $ 3,650,561 $ 6,977,929