Note 9 - Long-term Investments - Summary of Long-term Investments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Balance	$ 2,280	$ 67
Exchange translation adjustment	(88)	1
Cash investments during the year		2,250
Disposed during the year		(38)
Impairment losses provided during the year	(596)
Balance	$ 1,596	$ 2,280