Note 2 - Summary of Significant Accounting Policies - Concentration Risk (Details) - USD ($)	12 Months Ended
Jun. 30, 2023	Jun. 30, 2022
Revenue, related parties	$ 34,876,734	$ 37,829,123
Related Party [Member]
Accounts Receivable, Related Parties	$ 1,673,895	$ 2,230,874
Customer Concentration Risk [Member] \| Accounts Receivable [Member] \| Wainwright [Member]
Concentration risk percentage	100.00%	100.00%
Customer Concentration Risk [Member] \| Accounts Receivable [Member] \| Wainwright [Member] \| Related Party [Member]
Accounts Receivable, Related Parties	$ 1,673,895	$ 2,230,874
Customer Concentration Risk [Member] \| Accounts Receivable [Member] \| Wainwright [Member] \| Customers Related to the USO Fund [Member]
Concentration risk percentage	36.00%	49.00%
Customer Concentration Risk [Member] \| Accounts Receivable [Member] \| Wainwright [Member] \| Customers Related to the USO Fund [Member] \| Related Party [Member]
Accounts Receivable, Related Parties	$ 596,039	$ 1,101,495
Customer Concentration Risk [Member] \| Accounts Receivable [Member] \| Wainwright [Member] \| Customers Related to the BNO Fund [Member]
Concentration risk percentage	6.00%	9.00%
Customer Concentration Risk [Member] \| Accounts Receivable [Member] \| Wainwright [Member] \| Customers Related to the BNO Fund [Member] \| Related Party [Member]
Accounts Receivable, Related Parties	$ 108,153	$ 192,208
Customer Concentration Risk [Member] \| Accounts Receivable [Member] \| Wainwright [Member] \| Customers Related to the UNG Fund [Member]
Concentration risk percentage	33.00%	11.00%
Customer Concentration Risk [Member] \| Accounts Receivable [Member] \| Wainwright [Member] \| Customers Related to the UNG Fund [Member] \| Related Party [Member]
Accounts Receivable, Related Parties	$ 554,011	$ 249,638
Customer Concentration Risk [Member] \| Accounts Receivable [Member] \| Wainwright [Member] \| Customers Related to the USCI Fund [Member]
Concentration risk percentage	7.00%	12.00%
Customer Concentration Risk [Member] \| Accounts Receivable [Member] \| Wainwright [Member] \| Customers Related to the USCI Fund [Member] \| Related Party [Member]
Accounts Receivable, Related Parties	$ 113,634	$ 270,796
Customer Concentration Risk [Member] \| Accounts Receivable [Member] \| Wainwright [Member] \| All Other Customers [Member]
Concentration risk percentage	18.00%	19.00%
Customer Concentration Risk [Member] \| Accounts Receivable [Member] \| Wainwright [Member] \| All Other Customers [Member] \| Related Party [Member]
Accounts Receivable, Related Parties	$ 302,058	$ 416,737
Customer Concentration Risk [Member] \| Revenue Benchmark [Member] \| Wainwright [Member]
Concentration risk percentage	100.00%	100.00%
Customer Concentration Risk [Member] \| Revenue Benchmark [Member] \| Wainwright [Member] \| Related Party [Member]
Revenue, related parties	$ 20,862,191	$ 23,835,348
Customer Concentration Risk [Member] \| Revenue Benchmark [Member] \| Wainwright [Member] \| Customers Related to the USO Fund [Member]
Concentration risk percentage	42.00%	53.00%
Customer Concentration Risk [Member] \| Revenue Benchmark [Member] \| Wainwright [Member] \| Customers Related to the USO Fund [Member] \| Related Party [Member]
Revenue, related parties	$ 8,684,674	$ 12,634,794
Customer Concentration Risk [Member] \| Revenue Benchmark [Member] \| Wainwright [Member] \| Customers Related to the BNO Fund [Member]
Concentration risk percentage	8.00%	9.00%
Customer Concentration Risk [Member] \| Revenue Benchmark [Member] \| Wainwright [Member] \| Customers Related to the BNO Fund [Member] \| Related Party [Member]
Revenue, related parties	$ 1,700,995	$ 2,074,177
Customer Concentration Risk [Member] \| Revenue Benchmark [Member] \| Wainwright [Member] \| Customers Related to the UNG Fund [Member]
Concentration risk percentage	22.00%	10.00%
Customer Concentration Risk [Member] \| Revenue Benchmark [Member] \| Wainwright [Member] \| Customers Related to the UNG Fund [Member] \| Related Party [Member]
Revenue, related parties	$ 4,572,559	$ 2,380,912
Customer Concentration Risk [Member] \| Revenue Benchmark [Member] \| Wainwright [Member] \| Customers Related to the USCI Fund [Member]
Concentration risk percentage	9.00%	10.00%
Customer Concentration Risk [Member] \| Revenue Benchmark [Member] \| Wainwright [Member] \| Customers Related to the USCI Fund [Member] \| Related Party [Member]
Revenue, related parties	$ 1,967,048	$ 2,266,692
Customer Concentration Risk [Member] \| Revenue Benchmark [Member] \| Wainwright [Member] \| All Other Customers [Member]
Concentration risk percentage	19.00%	18.00%
Customer Concentration Risk [Member] \| Revenue Benchmark [Member] \| Wainwright [Member] \| All Other Customers [Member] \| Related Party [Member]
Revenue, related parties	$ 3,936,915	$ 4,478,773