Note 16 - Warrants (Details Textual) $ / shares in Units, $ in Thousands					3 Months Ended	6 Months Ended
		Jun. 14, 2024 USD ($) $ / shares shares	Jun. 08, 2023 USD ($) $ / shares shares	Jan. 06, 2023	Sep. 30, 2024 $ / shares shares	Dec. 31, 2024 USD ($) shares		Dec. 31, 2023 USD ($)	Jun. 30, 2024 shares		Jun. 30, 2023 $ / shares	Dec. 31, 2022 $ / shares	Aug. 11, 2022 $ / shares shares
Payments of Stock Issuance Costs | $						$ (0)		$ 160
Class of Warrant or Right, Outstanding (in shares)						5,899,880	[1]		6,075,880	[2]
Class of Warrant or Right, Exercised During Period (in shares)	[3]					176,000
Reverse Stock Split [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio				20
Pre-Funded Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)			430,217
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares			$ 0.0001										$ 0.02
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)			1
Tranche A Common Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)			2,173,912
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares			$ 3.18
Warrants and Rights Outstanding, Term (Year)			5 years
Tranche B Common Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)			2,173,912			1,630,424			1,806,434
Proceeds from Warrant Exercises | $		$ 3,500
Stock Issued During Period, Shares, Warrants Exercised (in shares)		367,478
Class of Warrant or Right, Exercised During Period (in shares)					176,000
Class of Warrant or Right, Exercise Price, Exercised During Period (in dollars per share) | $ / shares					$ 0.0001
Common Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares			$ 1.59
Common Warrants Exchanged for PreFunded Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares			$ 1.5899
Tranche B Pre-Funded Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)		1,806,434			176,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares		$ 0.0001			$ 0.0001
Warrants and Rights Outstanding | $		$ 5,100
August 2022 Prefunded Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)													87,500
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares													$ 0.02
August 2022 Common Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)													1,265,547
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares											$ 2.32	$ 3.3	$ 8.6
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)													1
Warrants and Rights Outstanding, Term (Year)													5 years
August 2022 Common Warrants [Member] | Minimum [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares													$ 2.32
August 2022 Common Warrants [Member] | Maximum [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)													2,325,581
Liability Warrants [Member]
Class of Warrant or Right, Outstanding (in shares)					3,821,115				3,821,115
Liability Pre-Funded Warrants [Member]
Class of Warrant or Right, Outstanding (in shares)						430,217			430,217
Equity Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)									18,114
Class of Warrant or Right, Outstanding (in shares)						18,114
Securities Purchase Agreement [Member]
Stock Issued During Period, Shares, New Issues (in shares)			1,743,695
Proceeds from Issuance or Sale of Equity | $			$ 4,000
Payment of Financing and Stock Issuance Costs | $			3,400
Securities Purchase Agreement Warrants [Member]
Warrants and Rights Outstanding | $			5,000
Payments of Stock Issuance Costs | $			$ 600

[1] The number of warrants outstanding as of December 31, 2024, is comprised of 3,821,115 liability classified warrants, 430,217 liability classified June 2023 Pre-Funded Warrants, 1,630,424 liability classified Tranche B Pre-Funded Warrants and 18,114 equity classified warrants.

[2] The number of warrants outstanding as of June 30, 2024, is comprised of 3,821,115 liability classified warrants, 430,217 liability classified June 2023 Pre-Funded Warrants, 1,806,434 liability classified Tranche B Pre-Funded Warrants and 18,114 equity classified warrants.

[3] Warrants exercised during the first quarter of fiscal 2025 were 176,000 of the Tranche B Warrants, which were exercised at a price of $0.0001 per share.