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Note 18 - Accumulated Other Comprehensive Income (Loss) - Components of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Balance as of December 31, 2020 | $ 1,744,491 |  |
Reclassification of currency translation related to equity method of RTC Canada | 0 | $ (601) | $ 0
Foreign currency translation adjustment | 1,967 | (4,917) | (82)
Balance as of December 31, 2021 | 1,870,879 | 1,744,491 |
AOCI Attributable to Parent [Member] |  |  |
Balance as of December 31, 2020 | (4,130) | 787 |
Reclassification of currency translation related to equity method of RTC Canada |  | (601) |
Foreign currency translation adjustment | 1,967 | (4,316) |
Balance as of December 31, 2021 | $ (2,163) | $ (4,130) | $ 787

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