Note 12 - Net Loss Per Share (Details Textual) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Oct. 25, 2024	Dec. 31, 2024	Dec. 31, 2023
Deemed Dividend on Warrant Inducement Offer	$ 5,200	$ 5,158	$ 800
Series X Preferred Stock [Member]
Antidilutive Securities Excluded from Computation of Net Income, Per Outstanding Unit, Amount (in dollars per share)		$ 1,265,601	$ 1,265,601
Warrant [Member]
Antidilutive Securities Excluded from Computation of Net Income, Per Outstanding Unit, Amount (in dollars per share)		16,539,513	1,104,214
Share-Based Payment Arrangement, Option [Member]
Antidilutive Securities Excluded from Computation of Net Income, Per Outstanding Unit, Amount (in dollars per share)		95,605	21,465
Abeyance Shares [Member]
Antidilutive Securities Excluded from Computation of Net Income, Per Outstanding Unit, Amount (in dollars per share)		$ 309,600
Series A Convertible Preferred Stock [Member]
Antidilutive Securities Excluded from Computation of Net Income, Per Outstanding Unit, Amount (in dollars per share)			$ 286,125
Series A Preferred Stock [Member]
Preferred Stock, Shares Outstanding (in shares)		0	4,578