Note 9 - Pensions and Other Postretirement Benefits - Expected Future Benefit Payments (Details) $ in Thousands	Dec. 31, 2023 USD ($)
Pension Plan [Member]
2023	$ 9,100
2024	3,676
2025	3,024
2026	3,995
2027	4,771
Thereafter	28,598
Postemployment Retirement Benefits [Member]
2023	1,530
2024	1,627
2025	1,658
2026	1,728
2027	1,783
Thereafter	$ 10,695

Amount of benefit for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following current fiscal year.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480506/715-20-50-1

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Amount of benefit for defined benefit plan expected to be paid in next fiscal year following current fiscal year.

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