Note 12 - Stockholders' Equity - Warrants Outstanding (Details)	Dec. 31, 2025 $ / shares shares
Shares Subject to Purchase (in shares)	1,316,180
Exercise Price 1 [Member]
Exercise Price per Share (in dollars per share) \| $ / shares	$ 275
Shares Subject to Purchase (in shares)	1,819
Exercise Price 2 [Member]
Exercise Price per Share (in dollars per share) \| $ / shares	$ 250
Shares Subject to Purchase (in shares)	1,029
Exercise Price 3 [Member]
Exercise Price per Share (in dollars per share) \| $ / shares	$ 97.5
Shares Subject to Purchase (in shares)	3,913
Exercise Price 4 [Member]
Exercise Price per Share (in dollars per share) \| $ / shares	$ 78
Shares Subject to Purchase (in shares)	100,625
Exercise Price 5 [Member]
Exercise Price per Share (in dollars per share) \| $ / shares	$ 19.3
Shares Subject to Purchase (in shares)	42,500
Exercise Price 6 [Member]
Exercise Price per Share (in dollars per share) \| $ / shares	$ 19.2
Shares Subject to Purchase (in shares)	32,500
Exercise Price 7 [Member]
Exercise Price per Share (in dollars per share) \| $ / shares	$ 11.34
Shares Subject to Purchase (in shares)	1,133,794