Note 4 - Fair Value Measurements - Assets and Liabilities Measured at Fair Value (Details) - USD ($)	Dec. 31, 2023	Dec. 31, 2022
Cash Equivalents	$ 263,089,306	$ 388,000,477
Commodity and Cryptocurrency Futures Contracts	2,237,493
Total	265,456,318	396,207,858
Commodity and Cryptocurrency Futures Contracts	10,888,842	29,433,069
Corn Futures Contracts [Member]
Commodity and Cryptocurrency Futures Contracts		1,585,798
Commodity and Cryptocurrency Futures Contracts	2,182,141	2,967,103
Wheat Futures Contracts [Member]
Commodity and Cryptocurrency Futures Contracts	2,237,493	3,160,732
Commodity and Cryptocurrency Futures Contracts	4,575,666	26,380,838
Soybean Futures Contracts [Member]
Commodity and Cryptocurrency Futures Contracts		2,520,370
Commodity and Cryptocurrency Futures Contracts	1,391,661
Sugar Futures Contracts [Member]
Commodity and Cryptocurrency Futures Contracts		911,329
Commodity and Cryptocurrency Futures Contracts	2,687,998	85,128
Bitcoin Futures Contracts [Member]
Commodity and Cryptocurrency Futures Contracts	129,519	29,152
Commodity and Cryptocurrency Futures Contracts	51,376
Fair Value, Inputs, Level 1 [Member]
Cash Equivalents	263,089,306	388,000,477
Total	265,456,318	396,207,858
Commodity and Cryptocurrency Futures Contracts	10,888,842	29,433,069
Fair Value, Inputs, Level 1 [Member] | Corn Futures Contracts [Member]
Commodity and Cryptocurrency Futures Contracts		1,585,798
Commodity and Cryptocurrency Futures Contracts	2,182,141	2,967,103
Fair Value, Inputs, Level 1 [Member] | Wheat Futures Contracts [Member]
Commodity and Cryptocurrency Futures Contracts	2,237,493	3,160,732
Commodity and Cryptocurrency Futures Contracts	4,575,666	26,380,838
Fair Value, Inputs, Level 1 [Member] | Soybean Futures Contracts [Member]
Commodity and Cryptocurrency Futures Contracts		2,520,370
Commodity and Cryptocurrency Futures Contracts	1,391,661
Fair Value, Inputs, Level 1 [Member] | Sugar Futures Contracts [Member]
Commodity and Cryptocurrency Futures Contracts		911,329
Commodity and Cryptocurrency Futures Contracts	2,687,998	85,128
Fair Value, Inputs, Level 1 [Member] | Bitcoin Futures Contracts [Member]
Commodity and Cryptocurrency Futures Contracts	129,519	29,152
Commodity and Cryptocurrency Futures Contracts	51,376
Fair Value, Inputs, Level 2 [Member]
Cash Equivalents	0	0
Total	0	0
Commodity and Cryptocurrency Futures Contracts	0	0
Fair Value, Inputs, Level 2 [Member] | Corn Futures Contracts [Member]
Commodity and Cryptocurrency Futures Contracts		0
Commodity and Cryptocurrency Futures Contracts	0	0
Fair Value, Inputs, Level 2 [Member] | Wheat Futures Contracts [Member]
Commodity and Cryptocurrency Futures Contracts	0	0
Commodity and Cryptocurrency Futures Contracts	0	0
Fair Value, Inputs, Level 2 [Member] | Soybean Futures Contracts [Member]
Commodity and Cryptocurrency Futures Contracts		0
Commodity and Cryptocurrency Futures Contracts	0
Fair Value, Inputs, Level 2 [Member] | Sugar Futures Contracts [Member]
Commodity and Cryptocurrency Futures Contracts		0
Commodity and Cryptocurrency Futures Contracts	0	0
Fair Value, Inputs, Level 2 [Member] | Bitcoin Futures Contracts [Member]
Commodity and Cryptocurrency Futures Contracts	0	0
Commodity and Cryptocurrency Futures Contracts	0
Fair Value, Inputs, Level 3 [Member]
Cash Equivalents	0	0
Total	0	0
Commodity and Cryptocurrency Futures Contracts	0	0
Fair Value, Inputs, Level 3 [Member] | Corn Futures Contracts [Member]
Commodity and Cryptocurrency Futures Contracts		0
Commodity and Cryptocurrency Futures Contracts	0	0
Fair Value, Inputs, Level 3 [Member] | Wheat Futures Contracts [Member]
Commodity and Cryptocurrency Futures Contracts	0	0
Commodity and Cryptocurrency Futures Contracts	0	0
Fair Value, Inputs, Level 3 [Member] | Soybean Futures Contracts [Member]
Commodity and Cryptocurrency Futures Contracts		0
Commodity and Cryptocurrency Futures Contracts	0
Fair Value, Inputs, Level 3 [Member] | Sugar Futures Contracts [Member]
Commodity and Cryptocurrency Futures Contracts		0
Commodity and Cryptocurrency Futures Contracts	0	0
Fair Value, Inputs, Level 3 [Member] | Bitcoin Futures Contracts [Member]
Commodity and Cryptocurrency Futures Contracts	0	$ 0
Commodity and Cryptocurrency Futures Contracts	$ 0