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FINANCIAL INSTRUMENTS, OFF-BALANCE SHEET RISKS AND CONTINGENCIES (Additional Information) (Details) (USD $)
Mar. 31, 2013
Dec. 31, 2012
Carrying Amounts and Fair Values of Financial Instruments or Liabilities [Line Items]    
Cash investments in money market funds $ 20,522,574 $ 20,522,574
Deposits in domestic and foreign financial institutions $ 19,847,291 $ 23,560,690