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Note 18 - Accumulated Other Comprehensive Income ("AOCI") - Changes in the Components of AOCI (Details) - USD ($) $ in Thousands | 9 Months Ended
--- | ---
Sep. 30, 2023 | Sep. 30, 2022
Balance as of January 1, 2023 |  | $ 10,581 |  |
Balance as of September 30, 2023 |  | 6,616 |  |
Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent [Member] |  |  |  |
Balance as of January 1, 2023 |  | 10,581 |  | $ 2,216
Other comprehensive income before reclassifications |  | 267 |  | 4,472
Amounts reclassified from AOCI (1) |  | (10,848) | [1] | 0
Net current-period other comprehensive income |  | (10,581) |  | 4,472
Balance as of September 30, 2023 |  | 0 |  | $ 6,688
AOCI, Unrealized Gain (Loss) Related to Equity Method Investments [Member] |  |  |  |
Balance as of January 1, 2023 |  | 0 |  |
Other comprehensive income before reclassifications |  | 6,616 |  |
Amounts reclassified from AOCI (1) | [1] | 0 |  |
Net current-period other comprehensive income |  | 6,616 |  |
Balance as of September 30, 2023 |  | 6,616 |  |
AOCI Attributable to Parent [Member] |  |  |  |
Balance as of January 1, 2023 |  | 10,581 |  |
Other comprehensive income before reclassifications |  | 6,883 |  |
Amounts reclassified from AOCI (1) | [1] | (10,848) |  |
Net current-period other comprehensive income |  | (3,965) |  |
Balance as of September 30, 2023 |  | $ 6,616 |  |
[1] | Amounts are included in Other income, net on the Company’s Condensed Consolidated Statements of Income. See Footnote 20 of the Notes to Condensed Consolidated Financial Statements for defined benefit plan disclosure.

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