Note 8 - Noncontrolling Interest - Clyra Medical - Warrants Outstanding (Details) - $ / shares	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025
Warrants outstanding, balance (in shares)	31,244,078	31,615,616
Warrants outstanding, Expired (in shares)	(4,913,127)	(1,888,170)
Warrants outstanding, balance (in shares)	27,529,783	29,727,446
Weighted average remaining life, balance (Year)	1 year 4 months 24 days
Clyra Medical [Member]
Warrants outstanding, balance (in shares)	1,702,496	1,183,182
Granted warrants, balance (in shares)	226,344	470,002
Warrants outstanding, Expired (in shares)	(358,810)	(224,944)
Weighted average price, Expired (in dollars per share)	$ 3.72	$ 7.24
Warrants outstanding, balance (in shares)	1,570,030	1,428,240
Weighted average remaining life, balance (Year)	1 year 9 months 18 days
Clyra Medical [Member] \| Minimum [Member]
Outstanding Warrants, Weighted Average Price Per Share (in dollars per share)	$ 5.39	$ 4.84
Granted Warrants, Weighted Average Price Per Share (in dollars per share)	7.5	6.94
Outstanding Warrants, Weighted Average Price Per Share (in dollars per share)	$ 6.13	$ 4.87

31,244,078

31,615,616

27,529,783

29,727,446