Schedule of Investments (Parenthetical) - USD ($)	12 Months Ended
Dec. 31, 2019	Dec. 31, 2020
Collateral Amount On Open Futures Contracts	$ 6,440,093	$ 15,259,310
U.S. Treasury Bills, 2.10%, 1/03/2019 \| United States Treasury Obligations \| Cash Equivalents
Interest rate	2.05%
Expiration date	1/02/2020
U.S. Treasury Bills, 2.10%, 1/10/2019 \| United States Treasury Obligations \| Cash Equivalents
Interest rate	2.03%
Expiration date	1/09/2020
U.S. Treasury Bills, 2.13%, 1/17/2019 \| United States Treasury Obligations \| Cash Equivalents
Interest rate	2.01%
Expiration date	1/16/2020
U.S. Treasury Bills, 2.15%, 1/24/2019 \| United States Treasury Obligations \| Cash Equivalents
Interest rate	2.04%
Expiration date	1/23/2020
U.S. Treasury Bills, 2.18%, 1/31/2019 \| United States Treasury Obligations \| Cash Equivalents
Interest rate	2.02%
Expiration date	1/30/2020
U.S. Treasury Bills, 2.20%, 2/07/2019 \| United States Treasury Obligations \| Cash Equivalents
Interest rate	1.90%
Expiration date	2/06/2020
U.S. Treasury Bills, 2.19%, 2/14/2019 \| United States Treasury Obligations \| Cash Equivalents
Interest rate	1.87%
Expiration date	2/13/2020
U.S. Treasury Bills, 2.20%, 2/21/2019 \| United States Treasury Obligations \| Cash Equivalents
Interest rate	1.85%
Expiration date	2/20/2020
U.S. Treasury Bills, 2.24%, 2/28/2019 \| United States Treasury Obligations \| Cash Equivalents
Interest rate	1.85%
Expiration date	2/27/2020
U.S. Treasury Bills, 2.38%, 3/07/2019 \| United States Treasury Obligations \| Cash Equivalents
Interest rate	1.84%
Expiration date	3/05/2020
U.S. Treasury Bills, 2.28%, 3/14/2019 \| United States Treasury Obligations \| Cash Equivalents
Interest rate	1.84%
Expiration date	3/19/2020
U.S. Treasury Bills, 2.33%, 3/21/2019 \| United States Treasury Obligations \| Cash Equivalents
Interest rate	1.88%
Expiration date	3/26/2020
U.S. Treasury Bills, 2.34%, 3/28/2019 \| United States Treasury Obligations \| Cash Equivalents
Interest rate	1.70%
Expiration date	4/02/2020
U.S. Treasury Bills, 2.37%, 4/04/2019 \| United States Treasury Obligations \| Cash Equivalents
Interest rate	1.64%
Expiration date	4/09/2020
U.S. Treasury Bills, 2.41%, 4/11/2019 \| United States Treasury Obligations \| Cash Equivalents
Interest rate	1.60%
Expiration date	4/16/2020
U.S. Treasury Bills, 2.42%, 4/18/2019 \| United States Treasury Obligations \| Cash Equivalents
Interest rate	1.60%
Expiration date	4/23/2020
U.S. Treasury Bills, 2.43%, 4/25/2019 \| United States Treasury Obligations \| Cash Equivalents
Interest rate	1.59%
Expiration date	4/30/2020
U.S. Treasury Bills, 2.46%, 5/02/2019 \| United States Treasury Obligations \| Cash Equivalents
Interest rate	1.54%
Expiration date	5/07/2020
U.S. Treasury Bills, 2.47%, 5/09/2019 \| United States Treasury Obligations \| Cash Equivalents
Interest rate	1.55%
Expiration date	5/14/2020
U.S. Treasury Bills, 2.48%, 5/16/2019 \| United States Treasury Obligations \| Cash Equivalents
Interest rate	1.55%
Expiration date	5/21/2020
U.S. Treasury Bills, 2.50%, 5/23/2019 \| United States Treasury Obligations \| Cash Equivalents
Interest rate	1.58%
Expiration date	5/28/2020
U.S. Treasury Bills, 2.49%, 5/30/2019 \| United States Treasury Obligations \| Cash Equivalents
Interest rate	1.53%
Expiration date	6/04/2020
U.S. Treasury Bills, 2.51%, 6/06/2019 \| United States Treasury Obligations \| Cash Equivalents
Interest rate	1.53%
Expiration date	6/11/2020
U.S. Treasury Bills, 2.51%, 6/13/2019 \| United States Treasury Obligations \| Cash Equivalents
Interest rate	1.54%
Expiration date	6/18/2020
U.S. Treasury Bills, 2.49%, 6/20/2019 \| United States Treasury Obligations \| Cash Equivalents
Interest rate	1.57%
Expiration date	6/25/2020