Note 14 - Warrants - Warrants Exercise Price (Details) - $ / shares	Jun. 30, 2026	Dec. 31, 2025	Dec. 31, 2024
Number of outstanding warrants (in shares)	7,335,008	7,335,008	2,291,276
Warrant term (Year)	3 years 7 months 17 days
Warrant Expiring June 12, 2031 [Member]
Exercise Price (in dollars per share)	$ 3
Number of outstanding warrants (in shares)	3,840,421
Warrant term (Year)	4 years 11 months 12 days
Warrant Expring March 2, 2028 [Member]
Exercise Price (in dollars per share)	$ 4
Number of outstanding warrants (in shares)	100,000
Warrant term (Year)	1 year 8 months 1 day
Warrant Expiring March 2, 2028 2 [Member]
Exercise Price (in dollars per share)	$ 5
Number of outstanding warrants (in shares)	100,000
Warrant term (Year)	1 year 8 months 1 day
Warrant Expriring June 13, 2028 to October 24, 2028 [Member]
Exercise Price (in dollars per share)	$ 4.5
Number of outstanding warrants (in shares)	3,074,587
Warrant Expriring June 13, 2028 to October 24, 2028 [Member] \| Minimum [Member]
Warrant term (Year)	1 year 11 months 15 days
Warrant Expriring June 13, 2028 to October 24, 2028 [Member] \| Maximum [Member]
Warrant term (Year)	2 years 3 months 25 days
Warrant Expiring September 21, 2029 [Member]
Exercise Price (in dollars per share)	$ 4
Number of outstanding warrants (in shares)	190,000
Warrant term (Year)	3 years 2 months 23 days
Warrant Expiring December 31, 2026 [Member]
Exercise Price (in dollars per share)	$ 40
Number of outstanding warrants (in shares)	30,000
Warrant term (Year)	6 months