Note 12 - Taxation - Income Tax Expense (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Current $ 0 $ 0 $ 0 $ 0
Deferred 1 2 2 4
Income tax benefit $ 1 $ 2 $ 2 $ 4