Statements of Cash Flows - USD ($)	3 Months Ended		12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Cash Flows from Operating Activities:
Net income (loss)	$ (5,496,268)	$ 12,241,895	$ (4,092,308)	$ 10,597,827	$ (4,091,719)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Change in unrealized (gain) loss on open commodity futures contracts			263,670	(3,782,570)	16,427,730
(Increase) decrease in dividends receivable			114,923	54,210	14,758
(Increase) decrease in interest receivable			33,638	84,740	129,482
(Increase) decrease in prepaid insurance			(7,266)	5,864	3,202
(Increase) decrease in ETF transaction fees receivable					350
Increase (decrease) in General Partner management fees payable			(14,821)	(10,888)	(68,885)
Increase (decrease) in professional fees payable			(29,567)	84,496	(289,732)
Increase (decrease) in brokerage commissions payable			(163)		163
Increase (decrease) in directors' fees payable			(940)	782	(1,864)
Net cash provided by (used in) operating activities			(3,732,834)	7,034,461	12,123,485
Cash Flows from Financing Activities:
Addition of partnership shares			100,834,362	208,175,789	122,821,101
Redemption of partnership shares			(110,833,721)	(234,327,822)	(223,134,431)
Net cash provided by (used in) financing activities			(9,999,359)	(26,152,033)	(100,313,330)
Net Increase (Decrease) in Cash and Cash Equivalents			(13,732,193)	(19,117,572)	(88,189,845)
Total Cash, Cash Equivalents and Equity in Trading Accounts, beginning of year			111,818,839	130,936,411	219,126,256
Total Cash, Cash Equivalents and Equity in Trading Accounts, end of year	98,086,646	111,818,839	98,086,646	111,818,839	130,936,411
Components of Cash, Cash Equivalents and Equity in Trading Accounts:
Cash and cash equivalents	86,504,094	80,077,619	86,504,094	80,077,619	78,711,966
Equity in Trading Accounts:
Cash and cash equivalents	11,582,552	31,741,220	11,582,552	31,741,220	52,224,445
Total Cash, Cash Equivalents and Equity in Trading Accounts	$ 98,086,646	$ 111,818,839	$ 98,086,646	$ 111,818,839	$ 130,936,411