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Note 7 - Income Taxes - Reconciliation of Differences Between Income Tax Provision Computed and Statutory Rate (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Statutory tax rate 25.80% 25.80% 25.80%
Income tax expense at statutory rate $ 21,041 $ 2,089 $ 1,387
Permanent differences 6,616 9,332 12,187
Effect of overseas tax rates 7,158 30,572 (4,024)
Net tax charge related to attributes with full valuation allowance (9,247) (7,408) 28,267
Exempt dividends from joint ventures (276) 0 (2,649)
Return to provision adjustments (4,719) (884) (5,966)
Withholding taxes 12,545 3,479 3,029
Foreign exchange movements on tax balances 3,766 2,908 694
Movement in uncertain tax positions 6,101 2,958 8,322
Others 3,063 1,261
Income tax expense $ 46,048 $ 44,307 $ 41,247
Effective tax rate 56.50% 547.40% 768.00%