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Note 7 - Income Taxes - Changes in Uncertain Tax Positions (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Balance at the beginning of the period $ 74,526 $ 89,644
Additions based on tax positions related to current period 5,885 4,292
Additions for tax positions of prior year period 4,864 2,108
Additions in relation to the Coretrax Acquisition 0 9,848
Settlements with tax authorities (2,477) (71)
Reductions for tax positions of prior years (4,309) (30,357)
Reductions due to the lapse of statute of limitations (1,842) (42)
Effect of changes in foreign exchange rates 1,243 (896)
Balance at the end of the period $ 77,890 $ 74,526