Note 14 - The Financing and Warrant Liabilities - Warrant Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022
Warrant Liabilities (US$’000)	$ 0	$ 13	$ 0	$ 13	$ 0	$ 0	$ 84	$ 185
Change in Fair Value (Gain)/Loss	(0)	(71)	(0)	(172)
Investor Warrants Issued in Connection with 2021 Financing [Member]
Warrant Liabilities (US$’000)	0	12	0	12	0	0	49	86
Change in Fair Value (Gain)/Loss	0	(37)	0	(74)
Placement Agent Warrants Issued in Connection with 2021 Financing [Member]
Warrant Liabilities (US$’000)	0	1	0	1	0	0	5	9
Change in Fair Value (Gain)/Loss	0	(4)	0	(8)
Investor Warrants Issued in Connection with 2020 Financing [Member]
Warrant Liabilities (US$’000)	0	0	0	0	0	0	25	76
Change in Fair Value (Gain)/Loss	0	(25)	0	(76)
Placement Agent Warrants Issued in Connection with 2020 Financing [Member]
Warrant Liabilities (US$’000)	0	0	0	0	$ 0	$ 0	$ 5	$ 14
Change in Fair Value (Gain)/Loss	$ 0	$ (5)	$ 0	$ (14)