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1. ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES - Partnership's assets and liabilities at fair value (Details) - USD ($)
Sep. 30, 2019
Dec. 31, 2018
Futures contracts [1] $ 139,720 $ 69,626
U.S. Government agency bonds and notes 6,338,911 9,735,119
Certificates of deposit 1,149,977 836,001
Corporate notes 3,752,792 5,183,853
Total Assets 11,381,400 15,824,599
Futures Contracts [1] (55,728) (167,374)
Level 1 [Member]    
Futures contracts [1] 139,720 69,626
U.S. Government agency bonds and notes 0 0
Certificates of deposit 0 0
Corporate notes 0 0
Total Assets 139,720 69,626
Futures Contracts [1] (55,728) (167,374)
Level 2 [Member]    
Futures contracts [1] 0 0
U.S. Government agency bonds and notes 6,338,911 9,735,119
Certificates of deposit 1,149,977 836,001
Corporate notes 3,752,792 5,183,853
Total Assets 11,241,680 15,754,973
Futures Contracts [1] 0 0
Level 3 [Member]    
Futures contracts [1] 0 0
U.S. Government agency bonds and notes 0 0
Certificates of deposit 0 0
Corporate notes 0 0
Total Assets 0 0
Futures Contracts [1] $ 0 $ 0
[1] See Note 7. "Financial Derivative Instruments" for the fair value in each type of contracts within this category.