Note 2 - Summary of Significant Accounting Policies - Concentration Risk (Details) - USD ($)	3 Months Ended	9 Months Ended
Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Revenue, related parties	$ 5,868,558	$ 5,997,085	$ 17,226,969	$ 19,182,801
Fund management - related party	5,868,558	5,997,085	17,226,969	19,182,801
Customer Concentration Risk [Member] \| Accounts Receivable [Member] \| Wainwright [Member]
Revenue, related parties			$ 2,346,568	$ 2,038,054
Concentration risk percentage			100.00%	100.00%
Fund management - related party			$ 2,346,568	$ 2,038,054
Customer Concentration Risk [Member] \| Accounts Receivable [Member] \| Wainwright [Member] \| Customers Related to the USO Fund [Member]
Revenue, related parties			$ 1,309,388	$ 1,156,691
Concentration risk percentage			56.00%	57.00%
Fund management - related party			$ 1,309,388	$ 1,156,691
Customer Concentration Risk [Member] \| Accounts Receivable [Member] \| Wainwright [Member] \| Customers Related to the BNO Fund [Member]
Revenue, related parties			$ 200,591	$ 196,713
Concentration risk percentage			9.00%	10.00%
Fund management - related party			$ 200,591	$ 196,713
Customer Concentration Risk [Member] \| Accounts Receivable [Member] \| Wainwright [Member] \| Customers Related to the UNG Fund [Member]
Revenue, related parties			$ 192,010	$ 130,543
Concentration risk percentage			8.00%	6.00%
Fund management - related party			$ 192,010	$ 130,543
Customer Concentration Risk [Member] \| Accounts Receivable [Member] \| Wainwright [Member] \| Customers Related to the USCI Fund [Member]
Revenue, related parties			$ 234,738	$ 141,346
Concentration risk percentage			10.00%	7.00%
Fund management - related party			$ 234,738	$ 141,346
Customer Concentration Risk [Member] \| Accounts Receivable [Member] \| Wainwright [Member] \| All Other Customers [Member]
Revenue, related parties			$ 409,841	$ 412,761
Concentration risk percentage			17.00%	20.00%
Fund management - related party			$ 409,841	$ 412,761
Customer Concentration Risk [Member] \| Revenue Benchmark [Member] \| Wainwright [Member]
Revenue, related parties	$ 5,868,558	$ 5,997,085	$ 17,226,969	$ 19,182,801
Concentration risk percentage	100.00%	100.00%	100.00%	100.00%
Fund management - related party	$ 5,868,558	$ 5,997,085	$ 17,226,969	$ 19,182,801
Customer Concentration Risk [Member] \| Revenue Benchmark [Member] \| Wainwright [Member] \| Customers Related to the USO Fund [Member]
Revenue, related parties	$ 3,186,393	$ 3,813,588	$ 9,304,211	$ 12,909,971
Concentration risk percentage	54.00%	64.00%	54.00%	67.00%
Fund management - related party	$ 3,186,393	$ 3,813,588	$ 9,304,211	$ 12,909,971
Customer Concentration Risk [Member] \| Revenue Benchmark [Member] \| Wainwright [Member] \| Customers Related to the BNO Fund [Member]
Revenue, related parties	$ 498,603	$ 663,973	$ 1,489,400	$ 2,060,809
Concentration risk percentage	8.00%	11.00%	9.00%	11.00%
Fund management - related party	$ 498,603	$ 663,973	$ 1,489,400	$ 2,060,809
Customer Concentration Risk [Member] \| Revenue Benchmark [Member] \| Wainwright [Member] \| Customers Related to the UNG Fund [Member]
Revenue, related parties	$ 534,048	$ 520,978	$ 1,648,194	$ 1,664,761
Concentration risk percentage	9.00%	9.00%	9.00%	9.00%
Fund management - related party	$ 534,048	$ 520,978	$ 1,648,194	$ 1,664,761
Customer Concentration Risk [Member] \| Revenue Benchmark [Member] \| Wainwright [Member] \| Customers Related to the USCI Fund [Member]
Revenue, related parties	$ 565,816	$ 308,497	$ 1,537,179	$ 774,913
Concentration risk percentage	10.00%	5.00%	9.00%	4.00%
Fund management - related party	$ 565,816	$ 308,497	$ 1,537,179	$ 774,913
Customer Concentration Risk [Member] \| Revenue Benchmark [Member] \| Wainwright [Member] \| All Other Customers [Member]
Revenue, related parties	$ 1,083,698	$ 690,049	$ 3,247,985	$ 1,772,347
Concentration risk percentage	19.00%	11.00%	19.00%	9.00%
Fund management - related party	$ 1,083,698	$ 690,049	$ 3,247,985	$ 1,772,347