Note 13 - Stockholders' Equity - Warrant Activity (Details) - $ / shares	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Equity [Line Items]
Balance (in shares)	415,779	576,063
Balance (in dollars per share)	$ 3.26	$ 4.4
Warrants issued (in shares)	0	0
Warrants issued (in dollars per share)	$ 0	$ 0
Warrants exercised (in shares)	0	(22,787)
Warrants exercised (in dollars per share)	$ 0	$ 5.7
Warrants expired (in shares)	(77,064)	(137,500)
Warrants expired (in dollars per share)	$ 5.7	$ 7.5
Adjustment based on recalculation of warrants outstanding after Reverse Split (Note 1) (in shares)		3
Adjustment based on recalculation of warrants outstanding after Reverse Split (Note 1) (in dollars per share)		$ 3.26
Balance (in shares)	338,715	415,779
Balance (in dollars per share)	$ 2.7	$ 3.26
Prefunded Warrants [Member]
Equity [Line Items]
Balance (in shares)	146,425
Balance (in dollars per share)	$ 0.01
Warrants issued (in shares)	0
Warrants issued (in dollars per share)	$ 0
Warrants exercised (in shares)	(146,425)
Warrants exercised (in dollars per share)	$ 0.01
Balance (in shares)	0	146,425
Balance (in dollars per share)	$ 0	$ 0.01