Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares	Mar. 31, 2026	Dec. 31, 2025
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, authorized (in shares)	50,000,000	50,000,000
Preferred stock, issued (in shares)	27,413,098	27,413,098
Preferred stock, outstanding (in shares)	27,413,098	27,413,098
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, authorized (in shares)	100,000,000	100,000,000
Common stock, issued (in shares)	2,477,655	2,130,063
Common stock, outstanding (in shares)	2,477,655	2,130,063
Common stock, unvested or restricted share award (in shares)	589,782	380,008