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Consolidated Condensed Schedule of Investments - USD ($)
Sep. 30, 2017
Dec. 31, 2016
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Investments Owned, Cost $ 82,163,255 $ 87,212,372
Investments Owned, Fair Value 82,280,025 87,511,963
Open long contracts | Futures, Forward, and Swap Contracts    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts $ (628,718) $ 547,921
Percent of Partners' Capital (Net Asset Value) (0.53%) 0.33%
Open long contracts | Forward Contracts | Currencies    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ (689,883) $ (9,770)
Percent of Partners' Capital (Net Asset Value) [1] (0.58%) (0.01%)
Open long contracts | Futures Contracts    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ 198,606 $ 1,292,389
Percent of Partners' Capital (Net Asset Value) [1] 0.17% 0.78%
Open long contracts | Futures Contracts | U.S. Futures Positions    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ (531,699) $ 196,631
Open long contracts | Futures Contracts | U.S. Futures Positions | Agriculturals    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ (36,881) $ (186,627)
Percent of Partners' Capital (Net Asset Value) [1] (0.03%) (0.11%)
Open long contracts | Futures Contracts | U.S. Futures Positions | Currencies    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ (461,712) $ 116,150
Percent of Partners' Capital (Net Asset Value) [1] (0.39%) 0.07%
Open long contracts | Futures Contracts | U.S. Futures Positions | Energy    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ 78,901 $ 540,550
Percent of Partners' Capital (Net Asset Value) [1] 0.07% 0.32%
Open long contracts | Futures Contracts | U.S. Futures Positions | Interest rates    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ (348,149) $ 21,206
Percent of Partners' Capital (Net Asset Value) [1] (0.29%) 0.01%
Open long contracts | Futures Contracts | U.S. Futures Positions | Meats    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ (1,905) $ 69,709
Percent of Partners' Capital (Net Asset Value) [1]   0.04%
Open long contracts | Futures Contracts | U.S. Futures Positions | Metals    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ (468,715) $ (74,055)
Percent of Partners' Capital (Net Asset Value) [1] (0.40%) (0.04%)
Open long contracts | Futures Contracts | U.S. Futures Positions | Soft commodities    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ 8,958 $ (22,484)
Percent of Partners' Capital (Net Asset Value) [1] 0.01% (0.01%)
Open long contracts | Futures Contracts | U.S. Futures Positions | Stock indices and single stock futures    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ 697,804 $ (267,818)
Percent of Partners' Capital (Net Asset Value) [1] 0.59% (0.16%)
Open long contracts | Futures Contracts | Foreign Futures Positions    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ 730,305 $ 1,095,758
Open long contracts | Futures Contracts | Foreign Futures Positions | Agriculturals    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] (4,799) 1,089
Open long contracts | Futures Contracts | Foreign Futures Positions | Currencies    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] 103  
Open long contracts | Futures Contracts | Foreign Futures Positions | Energy    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] 3,578 $ 8,773
Percent of Partners' Capital (Net Asset Value) [1]   0.01%
Open long contracts | Futures Contracts | Foreign Futures Positions | Interest rates    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ (536,343) $ 307,223
Percent of Partners' Capital (Net Asset Value) [1] (0.45%) 0.19%
Open long contracts | Futures Contracts | Foreign Futures Positions | Metals    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ 579,454 $ (76,499)
Percent of Partners' Capital (Net Asset Value) [1] 0.49% (0.05%)
Open long contracts | Futures Contracts | Foreign Futures Positions | Soft commodities    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ (2,626) $ 6,462
Open long contracts | Futures Contracts | Foreign Futures Positions | Stock indices    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ 690,938 $ 848,710
Percent of Partners' Capital (Net Asset Value) [1] 0.58% 0.51%
Open long contracts | Swap Contracts    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts $ (137,441) $ (734,698)
Percent of Partners' Capital (Net Asset Value) (0.12%) (0.44%)
Open long contracts | Swap Contracts | Deutsche Bank Total Return Swap Terminating March 29, 2019    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts $ (1,970,452) $ (1,139,264)
Percent of Partners' Capital (Net Asset Value) (1.67%) (0.68%)
Open long contracts | Swap Contracts | Deutsche Bank Total Return Swap Terminating July 1, 2020    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts $ 1,833,011 $ 404,566
Percent of Partners' Capital (Net Asset Value) 1.55% 0.24%
Open short contracts | Futures, Forward, and Swap Contracts    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts $ 274,133 $ 998,010
Percent of Partners' Capital (Net Asset Value) 0.23% 0.60%
Open short contracts | Forward Contracts | Currencies    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ 175,486 $ 10,475
Percent of Partners' Capital (Net Asset Value) [1] 0.15% 0.01%
Open short contracts | Futures Contracts    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ 98,647 $ 987,535
Percent of Partners' Capital (Net Asset Value) [1] 0.08% 0.59%
Open short contracts | Futures Contracts | U.S. Futures Positions    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ 9,847 $ 722,564
Open short contracts | Futures Contracts | U.S. Futures Positions | Agriculturals    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ (36,488) $ 43,391
Percent of Partners' Capital (Net Asset Value) [1] (0.03%) 0.02%
Open short contracts | Futures Contracts | U.S. Futures Positions | Currencies    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ 16,739 $ 301,634
Percent of Partners' Capital (Net Asset Value) [1] 0.01% 0.18%
Open short contracts | Futures Contracts | U.S. Futures Positions | Energy    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ (54,744) $ (5,443)
Percent of Partners' Capital (Net Asset Value) [1] (0.05%)  
Open short contracts | Futures Contracts | U.S. Futures Positions | Interest rates    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ 117,530 $ (45,121)
Percent of Partners' Capital (Net Asset Value) [1] 0.10% (0.02%)
Open short contracts | Futures Contracts | U.S. Futures Positions | Meats    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ (6,441) $ (375)
Percent of Partners' Capital (Net Asset Value) [1] (0.01%)  
Open short contracts | Futures Contracts | U.S. Futures Positions | Metals    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ 7,715 $ 143,785
Percent of Partners' Capital (Net Asset Value) [1] 0.01% 0.08%
Open short contracts | Futures Contracts | U.S. Futures Positions | Soft commodities    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ 139,233 $ 256,819
Percent of Partners' Capital (Net Asset Value) [1] 0.12% 0.15%
Open short contracts | Futures Contracts | U.S. Futures Positions | Stock indices and single stock futures    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ (173,697) $ 27,874
Percent of Partners' Capital (Net Asset Value) [1] (0.15%) 0.01%
Open short contracts | Futures Contracts | Foreign Futures Positions    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ 88,800 $ 264,971
Open short contracts | Futures Contracts | Foreign Futures Positions | Agriculturals    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] 2,439 1,439
Open short contracts | Futures Contracts | Foreign Futures Positions | Currencies    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] 2,274  
Open short contracts | Futures Contracts | Foreign Futures Positions | Interest rates    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ 301,687 $ (31,790)
Percent of Partners' Capital (Net Asset Value) [1] 0.26% (0.02%)
Open short contracts | Futures Contracts | Foreign Futures Positions | Metals    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ (108,129) $ 329,003
Percent of Partners' Capital (Net Asset Value) [1] (0.09%) 0.20%
Open short contracts | Futures Contracts | Foreign Futures Positions | Soft commodities    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ 5,825 $ 17,276
Percent of Partners' Capital (Net Asset Value) [1]   0.01%
Open short contracts | Futures Contracts | Foreign Futures Positions | Stock indices    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ (115,296) $ (50,957)
Percent of Partners' Capital (Net Asset Value) [1] (0.10%) (0.03%)
Open contracts | Futures, Forward, and Swap Contracts    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts $ (354,585) $ 1,545,931
Percent of Partners' Capital (Net Asset Value) (0.30%) 0.93%
Open contracts | Forward Contracts | Currencies    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ (514,397) $ 705
Percent of Partners' Capital (Net Asset Value) [1] (0.43%)  
Open contracts | Futures Contracts    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ 297,253 $ 2,279,924
Percent of Partners' Capital (Net Asset Value) [1] 0.25% 1.37%
Open contracts | Futures Contracts | U.S. Futures Positions    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ (521,852) $ 919,195
Open contracts | Futures Contracts | U.S. Futures Positions | Agriculturals    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ (73,369) $ (143,236)
Percent of Partners' Capital (Net Asset Value) [1] (0.06%) (0.09%)
Open contracts | Futures Contracts | U.S. Futures Positions | Currencies    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ (444,973) $ 417,784
Percent of Partners' Capital (Net Asset Value) [1] (0.38%) 0.25%
Open contracts | Futures Contracts | U.S. Futures Positions | Energy    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ 24,157 $ 535,107
Percent of Partners' Capital (Net Asset Value) [1] 0.02% 0.32%
Open contracts | Futures Contracts | U.S. Futures Positions | Interest rates    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ (230,619) $ (23,915)
Percent of Partners' Capital (Net Asset Value) [1] (0.20%) (0.01%)
Open contracts | Futures Contracts | U.S. Futures Positions | Meats    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ (8,346) $ 69,334
Percent of Partners' Capital (Net Asset Value) [1] (0.01%) 0.04%
Open contracts | Futures Contracts | U.S. Futures Positions | Metals    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ (461,000) $ 69,730
Percent of Partners' Capital (Net Asset Value) [1] (0.39%) 0.04%
Open contracts | Futures Contracts | U.S. Futures Positions | Soft commodities    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ 148,191 $ 234,335
Percent of Partners' Capital (Net Asset Value) [1] 0.13% 0.14%
Open contracts | Futures Contracts | U.S. Futures Positions | Stock indices and single stock futures    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ 524,107 $ (239,944)
Percent of Partners' Capital (Net Asset Value) [1] 0.44% (0.15%)
Open contracts | Futures Contracts | Foreign Futures Positions    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ 819,105 $ 1,360,729
Open contracts | Futures Contracts | Foreign Futures Positions | Agriculturals    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] (2,360) 2,528
Open contracts | Futures Contracts | Foreign Futures Positions | Currencies    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] 2,377  
Open contracts | Futures Contracts | Foreign Futures Positions | Energy    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] 3,578 $ 8,773
Percent of Partners' Capital (Net Asset Value) [1]   0.01%
Open contracts | Futures Contracts | Foreign Futures Positions | Interest rates    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ (234,656) $ 275,433
Percent of Partners' Capital (Net Asset Value) [1] (0.20%) 0.17%
Open contracts | Futures Contracts | Foreign Futures Positions | Metals    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ 471,325 $ 252,504
Percent of Partners' Capital (Net Asset Value) [1] 0.40% 0.15%
Open contracts | Futures Contracts | Foreign Futures Positions | Soft commodities    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ 3,199 $ 23,738
Percent of Partners' Capital (Net Asset Value) [1]   0.01%
Open contracts | Futures Contracts | Foreign Futures Positions | Stock indices    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts [1] $ 575,642 $ 797,753
Percent of Partners' Capital (Net Asset Value) [1] 0.49% 0.48%
Open contracts | Swap Contracts    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts $ (137,441) $ (734,698)
Percent of Partners' Capital (Net Asset Value) (0.12%) (0.44%)
Open contracts | Swap Contracts | Deutsche Bank Total Return Swap Terminating March 29, 2019    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts $ (1,970,452) $ (1,139,264)
Percent of Partners' Capital (Net Asset Value) (1.67%) (0.68%)
Open contracts | Swap Contracts | Deutsche Bank Total Return Swap Terminating July 1, 2020    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Net unrealized gain/(loss) on open contracts $ 1,833,011 $ 404,566
Percent of Partners' Capital (Net Asset Value) 1.55% 0.24%
Securities owned    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Percent of Partners' Capital (Net Asset Value) 69.60% 52.92%
Investments Owned, Cost $ 82,163,255 $ 87,212,372
Investments Owned, Fair Value $ 82,280,025 $ 87,511,963
Securities owned | U.S. Government-sponsored enterprises    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Percent of Partners' Capital (Net Asset Value) 58.51% 41.85%
Investments Owned, Cost $ 68,997,750 $ 68,999,520
Investments Owned, Fair Value $ 69,173,416 $ 69,209,493
Securities owned | Federal Farm Credit Banks | U.S. Government-sponsored enterprises    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Percent of Partners' Capital (Net Asset Value) 40.27% 28.80%
Investments Owned, Face Value $ 47,500,000 $ 47,500,000
Investments Owned, Rate of Return Range Minimum 1.10% 1.10%
Investments Owned, Rate of Return Range Maximum 1.30% 1.30%
Investments Owned, Fair Value $ 47,606,128 $ 47,629,368
Securities owned | Federal Home Loan Banks | U.S. Government-sponsored enterprises    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Percent of Partners' Capital (Net Asset Value) 16.12% 11.53%
Investments Owned, Face Value $ 19,000,000 $ 19,000,000
Investments Owned, Rate of Return Range Minimum 1.10% 1.10%
Investments Owned, Rate of Return Range Maximum 1.50% 1.50%
Investments Owned, Fair Value $ 19,061,588 $ 19,067,300
Securities owned | Federal Agricultural Mortgage Corp. | U.S. Government-sponsored enterprises    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Percent of Partners' Capital (Net Asset Value) 2.12% 1.52%
Investments Owned, Face Value $ 2,500,000 $ 2,500,000
Investments Owned, Rate of Return 1.10% 1.10%
Investments Owned, Fair Value $ 2,505,700 $ 2,512,825
Securities owned | U.S. Corporate bonds | Corporate Bonds    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Percent of Partners' Capital (Net Asset Value) 4.99% 6.75%
Investments Owned, Cost $ 5,865,505 $ 11,093,510
Investments Owned, Fair Value $ 5,897,469 $ 11,158,232
Securities owned | American Electric Power | Corporate Bonds    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Percent of Partners' Capital (Net Asset Value)   1.17%
Investments Owned, Face Value   $ 1,900,000
Investments Owned, Rate of Return   1.80%
Investments Owned, Fair Value   $ 1,932,728
Securities owned | American Honda Finance | Corporate Bonds    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Percent of Partners' Capital (Net Asset Value) 1.70% 1.22%
Investments Owned, Face Value $ 2,000,000 $ 2,000,000
Investments Owned, Rate of Return 1.50% 1.50%
Investments Owned, Fair Value $ 2,004,493 $ 2,013,468
Securities owned | AT&T, Inc. | Corporate Bonds    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Percent of Partners' Capital (Net Asset Value) 1.56% 1.11%
Investments Owned, Face Value $ 1,840,000 $ 1,840,000
Investments Owned, Rate of Return 1.80% 1.80%
Investments Owned, Fair Value $ 1,847,246 $ 1,835,800
Securities owned | GATX Corporation | Corporate Bonds    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Percent of Partners' Capital (Net Asset Value)   1.16%
Investments Owned, Face Value   $ 1,905,000
Investments Owned, Rate of Return   1.80%
Investments Owned, Fair Value   $ 1,910,867
Securities owned | Wells Fargo & Company | Corporate Bonds    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Percent of Partners' Capital (Net Asset Value) 1.73% 1.29%
Investments Owned, Face Value $ 2,000,000 $ 2,000,000
Investments Owned, Rate of Return 1.70% 1.70%
Investments Owned, Fair Value $ 2,045,730 $ 2,133,790
Securities owned | Others | Corporate Bonds    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Percent of Partners' Capital (Net Asset Value) [2]   0.80%
Investments Owned, Face Value [2]   $ 1,325,000
Investments Owned, Rate of Return [2]   1.50%
Investments Owned, Fair Value [2]   $ 1,331,579
Securities owned | U.S. Mutual Fund | Grant Park Absolute Return Fund, Class I    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Percent of Partners' Capital (Net Asset Value) 6.10%  
Investments Owned, Shares 647,140  
Investments Owned, Cost $ 7,300,000  
Investments Owned, Fair Value $ 7,209,140  
Securities owned | U.S. commercial paper | Commercial paper    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Percent of Partners' Capital (Net Asset Value)   4.32%
Investments Owned, Cost   $ 7,119,342
Investments Owned, Fair Value   $ 7,144,238
Securities owned | Coca-Cola Corp | Commercial paper    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Percent of Partners' Capital (Net Asset Value)   2.42%
Investments Owned, Face Value   $ 4,000,000
Investments Owned, Rate of Return   0.80%
Investments Owned, Fair Value   $ 3,994,645
Securities owned | Others | Commercial paper    
Unrealized gain/(loss), percent of partners' capital (net asset value), face value and fair value of Investments Owned    
Percent of Partners' Capital (Net Asset Value) [2]   1.90%
Investments Owned, Face Value [2]   $ 3,150,000
Investments Owned, Rate of Return Range Minimum [2]   0.90%
Investments Owned, Rate of Return Range Maximum [2]   1.40%
Investments Owned, Fair Value [2]   $ 3,149,593
[1] No individual futures and forward contract position constituted greater than 1 percent of partners’ capital (net asset value). Accordingly, the number of contracts and expiration dates are not presented.
[2] No individual position constituted greater than 1 percent of partners’ capital (net asset value).