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Note 18 - Accumulated Other Comprehensive Income ("AOCI") - Changes in the Components of AOCI (Details) - USD ($) $ in Thousands | 6 Months Ended
--- | ---
Jun. 30, 2023 | Jun. 30, 2022
Balance as of January 1, 2023 | $ 10,581 |
Balance as of June 30, 2023 | 15,942 |
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 | 0 | 4,260
Amounts reclassified from AOCI | 0 | 0
Net current-period other comprehensive income | 0 | 4,260
Balance as of June 30, 2023 | 10,581 | $ 6,476
AOCI, Unrealized Gain (Loss) Related to Equity Method Investments [Member] |  |
Balance as of January 1, 2023 | 0 |
Other comprehensive income before reclassifications | 5,361 |
Amounts reclassified from AOCI | 0 |
Net current-period other comprehensive income | 5,361 |
Balance as of June 30, 2023 | 5,361 |
AOCI Attributable to Parent [Member] |  |
Balance as of January 1, 2023 | 10,581 |
Other comprehensive income before reclassifications | 5,361 |
Amounts reclassified from AOCI | 0 |
Net current-period other comprehensive income | 5,361 |
Balance as of June 30, 2023 | $ 15,942 |

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