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Note 17 - Tax Expense - Tax Paid (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Statement Line Items [Line Items]      
Net income tax payable at January 1 $ (419) $ (163) $ (1,538)
Current tax expense (9,051) (9,492) (7,311)
Foreign currency movement 583 2,580 3,168
Tax paid 7,426 6,656 5,517
Net income tax payable at December 31 $ (1,461) $ (419) $ (163)