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Derivatives and Hedging, Effect of Trading Activities on the Statements of Financial Condition (Details) (USD $)
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Dec. 31, 2012
Futures and Forward Contracts [Abstract]          
Unrealized currency loss $ (624,412)   $ (624,412)   $ (1,203,865)
Net unrealized gain on open contracts 177,506   177,506   2,551,354
Effect of Trading Activities on Statements of Income [Abstract]          
Unrealized currency gain (loss) 1,338 53,155 11,333 134,821  
Net realized (3,781,720) 1,327,550 1,725,464 14,755,603  
Net change in unrealized (4,575,057) (1,270,543) (2,373,848) (7,912,697)  
Total Trading Results (8,356,777) 57,007 (648,384) 6,842,906  
Commodity [Member]
         
Effect of Trading Activities on Statements of Income [Abstract]          
Trading results (7,566,747) (1,395,944) (5,995,332) 2,027,073  
Equity [Member]
         
Effect of Trading Activities on Statements of Income [Abstract]          
Trading results 283,521 (8,143,567) 9,453,363 3,061,766  
Foreign Currency [Member]
         
Effect of Trading Activities on Statements of Income [Abstract]          
Trading results (953,057) 264,529 (2,368,368) (5,570,086)  
Interest Rate [Member]
         
Effect of Trading Activities on Statements of Income [Abstract]          
Trading results (1,191,293) 12,505,129 (1,912,407) 6,054,065  
Futures and Forward Contracts [Member]
         
Futures and Forward Contracts [Abstract]          
Net Unrealized Gain/(Loss) 801,918   801,918   3,755,219
Futures and Forward Contracts [Member] | Commodity [Member]
         
Futures and Forward Contracts [Abstract]          
Net Unrealized Gain/(Loss) (501,394)   (501,394)   (340,563)
Average number of contracts outstanding 4,032   4,032   4,025
Futures and Forward Contracts [Member] | Equity [Member]
         
Futures and Forward Contracts [Abstract]          
Net Unrealized Gain/(Loss) (898,771)   (898,771)   1,289,382
Average number of contracts outstanding 1,722   1,722   1,915
Futures and Forward Contracts [Member] | Foreign Currency [Member]
         
Futures and Forward Contracts [Abstract]          
Net Unrealized Gain/(Loss) 2,308,609   2,308,609   2,799,117
Average number of contracts outstanding 3,336   3,336   5,689
Futures and Forward Contracts [Member] | Interest Rate [Member]
         
Futures and Forward Contracts [Abstract]          
Net Unrealized Gain/(Loss) (106,526)   (106,526)   7,283
Average number of contracts outstanding 5,727   5,727   9,810
Futures and Forward Contracts [Member] | Long [Member]
         
Futures and Forward Contracts [Abstract]          
Unrealized gain 5,009,341   5,009,341   5,244,757
Unrealized loss (3,345,819)   (3,345,819)   (3,168,433)
Futures and Forward Contracts [Member] | Long [Member] | Commodity [Member]
         
Futures and Forward Contracts [Abstract]          
Unrealized gain 792,943   792,943   763,693
Unrealized loss (1,693,971)   (1,693,971)   (1,021,268)
Futures and Forward Contracts [Member] | Long [Member] | Equity [Member]
         
Futures and Forward Contracts [Abstract]          
Unrealized gain 275,859   275,859   1,842,840
Unrealized loss (1,174,630)   (1,174,630)   (517,175)
Futures and Forward Contracts [Member] | Long [Member] | Foreign Currency [Member]
         
Futures and Forward Contracts [Abstract]          
Unrealized gain 2,829,400   2,829,400   1,878,922
Unrealized loss (388,370)   (388,370)   (1,022,609)
Futures and Forward Contracts [Member] | Long [Member] | Interest Rate [Member]
         
Futures and Forward Contracts [Abstract]          
Unrealized gain 1,111,139   1,111,139   759,302
Unrealized loss (88,848)   (88,848)   (607,381)
Futures and Forward Contracts [Member] | Short [Member]
         
Futures and Forward Contracts [Abstract]          
Unrealized gain 2,010,209   2,010,209   3,251,449
Unrealized loss (2,871,813)   (2,871,813)   (1,572,554)
Futures and Forward Contracts [Member] | Short [Member] | Commodity [Member]
         
Futures and Forward Contracts [Abstract]          
Unrealized gain 1,817,733   1,817,733   1,051,860
Unrealized loss (1,418,099)   (1,418,099)   (1,134,848)
Futures and Forward Contracts [Member] | Short [Member] | Equity [Member]
         
Futures and Forward Contracts [Abstract]          
Unrealized gain 0   0   0
Unrealized loss 0   0   (36,283)
Futures and Forward Contracts [Member] | Short [Member] | Foreign Currency [Member]
         
Futures and Forward Contracts [Abstract]          
Unrealized gain 192,448   192,448   2,196,364
Unrealized loss (324,869)   (324,869)   (253,560)
Futures and Forward Contracts [Member] | Short [Member] | Interest Rate [Member]
         
Futures and Forward Contracts [Abstract]          
Unrealized gain 28   28   3,225
Unrealized loss $ (1,128,845)   $ (1,128,845)   $ (147,863)