Note 4 - Fair Value Measurements - Assets and Liabilities Measured at Fair Value (Details) - USD ($)	Jun. 30, 2023	Dec. 31, 2022
Cash Equivalents	$ 263,945,542	$ 388,000,477
Total	265,812,434	396,207,858
Commodity and Cryptocurrency Futures Contracts	37,562,733	29,433,069
Corn Futures Contracts [Member]
Commodity and Cryptocurrency Futures Contracts		1,585,798
Commodity and Cryptocurrency Futures Contracts	13,427,593	2,967,103
Soybean Futures Contracts [Member]
Commodity and Cryptocurrency Futures Contracts	818,350	2,520,370
Commodity and Cryptocurrency Futures Contracts	685,954
Sugar Futures Contracts [Member]
Commodity and Cryptocurrency Futures Contracts	921,870	911,329
Commodity and Cryptocurrency Futures Contracts	97,357	85,128
Wheat Futures Contracts [Member]
Commodity and Cryptocurrency Futures Contracts		3,160,732
Commodity and Cryptocurrency Futures Contracts	23,351,829	26,380,838
Bitcoin Futures Contracts [Member]
Commodity and Cryptocurrency Futures Contracts	126,672	29,152
Fair Value, Inputs, Level 1 [Member]
Cash Equivalents	263,945,542	388,000,477
Total	265,812,434	396,207,858
Commodity and Cryptocurrency Futures Contracts	37,562,733	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	13,427,593	2,967,103
Fair Value, Inputs, Level 1 [Member] | Soybean Futures Contracts [Member]
Commodity and Cryptocurrency Futures Contracts	818,350	2,520,370
Commodity and Cryptocurrency Futures Contracts	685,954
Fair Value, Inputs, Level 1 [Member] | Sugar Futures Contracts [Member]
Commodity and Cryptocurrency Futures Contracts	921,870	911,329
Commodity and Cryptocurrency Futures Contracts	97,357	85,128
Fair Value, Inputs, Level 1 [Member] | Wheat Futures Contracts [Member]
Commodity and Cryptocurrency Futures Contracts		3,160,732
Commodity and Cryptocurrency Futures Contracts	23,351,829	26,380,838
Fair Value, Inputs, Level 1 [Member] | Bitcoin Futures Contracts [Member]
Commodity and Cryptocurrency Futures Contracts	126,672	29,152
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] | Soybean Futures Contracts [Member]
Commodity and Cryptocurrency Futures Contracts	0	0
Commodity and Cryptocurrency Futures Contracts	0
Fair Value, Inputs, Level 2 [Member] | Sugar Futures Contracts [Member]
Commodity and Cryptocurrency Futures Contracts	0	0
Commodity and Cryptocurrency Futures Contracts	0	0
Fair Value, Inputs, Level 2 [Member] | Wheat 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
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] | Soybean Futures Contracts [Member]
Commodity and Cryptocurrency Futures Contracts	0	0
Commodity and Cryptocurrency Futures Contracts	0
Fair Value, Inputs, Level 3 [Member] | Sugar Futures Contracts [Member]
Commodity and Cryptocurrency Futures Contracts	0	0
Commodity and Cryptocurrency Futures Contracts	0	0
Fair Value, Inputs, Level 3 [Member] | Wheat 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