Note 20 - Accumulated Other Comprehensive Income ("AOCI") - Changes in the Components of AOCI (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023
Balance as of January 1, 2024	$ 3,329
Balance as of March 31, 2024	10,279
Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent [Member]
Balance as of January 1, 2024	0	$ 10,581
Other comprehensive income before reclassifications	8,536	0
Amounts reclassed from AOCI	(2,077)	0
Net current-period other comprehensive income	6,459	0
Balance as of March 31, 2024	6,459	$ 10,581
AOCI, Unrealized Gain (Loss) Related to Equity Method Investments [Member]
Balance as of January 1, 2024	3,329
Other comprehensive income before reclassifications	491
Amounts reclassed from AOCI	0
Net current-period other comprehensive income	491
Balance as of March 31, 2024	3,820
AOCI Attributable to Parent [Member]
Balance as of January 1, 2024	3,329
Other comprehensive income before reclassifications	9,027
Amounts reclassed from AOCI	(2,077)
Net current-period other comprehensive income	6,950
Balance as of March 31, 2024	$ 10,279

Amount, after tax, of accumulated increase (decrease) in equity from transaction and other event and circumstance from nonowner source.

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