Note 19 - Subsequent Events (Details Textual) - USD ($)				3 Months Ended	6 Months Ended
	Aug. 13, 2026	Aug. 12, 2026	Jul. 31, 2026	Jun. 30, 2025	Jun. 30, 2026	Aug. 14, 2026	Dec. 31, 2025
Stock Issued During Period, Value, New Issues				$ 1,908,000
Common Stock, Shares, Outstanding (in shares)					4,151,919		2,525,778
Common Stock, Shares, Issued (in shares)					4,151,919		2,525,778
Conversion of Series C Preferred Stock into Common Stock [Member]
Conversion of Stock, Shares Converted (in shares)					313
Conversion of Stock, Shares Issued (in shares)					494,533
Subsequent Event [Member]
Common Stock, Shares, Outstanding (in shares)						22,189,739
Subsequent Event [Member] | Conversion of Series B Preferred Stock to Common Stock [Member]
Conversion of Stock, Shares Converted (in shares)		300
Conversion of Stock, Shares Issued (in shares)		846,666
Subsequent Event [Member] | Conversion of Series C Preferred Stock into Common Stock [Member]
Conversion of Stock, Shares Converted (in shares)	5,600
Conversion of Stock, Shares Issued (in shares)	16,145,457
Subsequent Event [Member] | Minimum [Member]
Preferred Stock, Ownership Percentage Limitation for Conversion to Common Stock			4.90%
Subsequent Event [Member] | Maximum [Member]
Preferred Stock, Ownership Percentage Limitation for Conversion to Common Stock			19.90%
Subsequent Event [Member] | Statera License Agreement [Member]
Stock Issued During Period, Value, New Issues			$ 750,000
Subsequent Event [Member] | Series A Preferred Stock [Member] | Statera License Agreement [Member]
Stock Issued During Period, Shares, New Issues (in shares)			1,287.8685