XML 23 R24.htm IDEA: XBRL DOCUMENT v2.4.0.8
FINANCIAL INSTRUMENTS, OFF-BALANCE SHEET RISKS AND CONTINGENCIES (Additional Information) (Details) (USD $)
Jun. 30, 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 $ 6,681,366 $ 23,560,690