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Note 19 - Post-retirement Benefits - Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Actuarial (loss) gain on defined benefit plans | $ (4,529) | $ 7,440 | $ 22,345
Amortization of prior service credit | (702) | (249) | (249)
Pension Plan [Member] | UNITED KINGDOM |  |  |
Current service cost | (350) | (357) | (439)
Interest cost | (6,177) | (4,307) | (3,407)
Expected return on plan assets | 6,977 | 6,796 | 5,499
Amortization of prior service credit | 249 | 249 | 249
Reclassified net remeasurement (loss) gains | 453 | 0 | 244
Amounts included in consolidated statements of operations | 1,152 | 2,381 | 2,146
Actuarial (loss) gain on defined benefit plans | (4,529) | 7,440 | 22,345
Amortization of prior service credit | (249) | (249) | (249)
Reclassified net remeasurement (loss) gains | (453) | 0 | (244)
Other comprehensive income (loss) | (5,231) | 7,191 | 21,852
Total comprehensive income (loss) | $ (4,079) | $ 9,572 | $ 23,998

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