Note 7 - Convertible Notes with Warrants (Related Party) - Change in Fair Value (Details) - USD ($)	3 Months Ended	6 Months Ended
Jun. 30, 2026	Mar. 31, 2026	Jun. 30, 2025	Mar. 31, 2025	Jun. 30, 2026	Jun. 30, 2025
Fair value, beginning balance		$ 25,014,200			$ 25,014,200
Fair value change in convertible notes (related party)	$ (89,900)		$ 3,590,600		8,172,700	$ 3,895,000
Fair value	33,186,900				33,186,900
Change in fair value of convertible notes (related party)	(89,900)		3,590,600		8,172,700	3,895,000
Securities Purchase Agreement [Member]
Fair value, beginning balance	33,276,800	25,014,200	20,174,100	$ 19,869,700	25,014,200	19,869,700
Fair value change in convertible notes (related party)	(89,900)	8,262,600	3,590,600	304,400
Fair value	33,186,900	33,276,800	23,764,700	20,174,100	33,186,900	23,764,700
Change in fair value of convertible notes (related party)	(89,900)	8,262,600	3,590,600	304,400
Securities Purchase Agreement, Tranche One [Member]
Fair value, beginning balance	15,629,200	11,745,700	9,415,800	9,269,900	11,745,700	9,269,900
Fair value change in convertible notes (related party)	(18,700)	3,883,500	1,712,400	145,900
Fair value	15,610,500	15,629,200	11,128,200	9,415,800	15,610,500	11,128,200
Change in fair value of convertible notes (related party)	(18,700)	3,883,500	1,712,400	145,900
Securities Purchase Agreement, Tranche Two [Member]
Fair value, beginning balance	17,647,600	13,268,500	10,758,300	10,599,800	13,268,500	10,599,800
Fair value change in convertible notes (related party)	(71,200)	4,379,100	1,878,200	158,500
Fair value	17,576,400	17,647,600	12,636,500	10,758,300	$ 17,576,400	$ 12,636,500
Change in fair value of convertible notes (related party)	$ (71,200)	$ 4,379,100	$ 1,878,200	$ 158,500