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7. COMMODITIES HELD BY BROKER (Details 1) (USD $)
3 Months Ended 6 Months Ended
Apr. 30, 2013
Apr. 30, 2012
Apr. 30, 2013
Apr. 30, 2012
Commodities Held By Broker Details 1        
Gross realized gains $ 384,950 $ 306,575 $ 1,152,007 $ 489,105
Gross realized losses (1,312,556) (1,410,588) (2,505,614) (2,197,988)
Unrealized gains (losses) (423,328) (280,681) 30,555 1,296,613
Total $ (1,350,934) $ (1,384,694) $ (1,323,052) $ (412,270)