Note 9 - Pensions and Other Postretirement Benefits - Expected Future Benefit Payments (Details) $ in Thousands	Dec. 31, 2021 USD ($)
Pension Plan [Member]
202	$ 14,089
2023	3,963
2024	4,867
2025	3,929
2026	4,950
Thereafter	26,412
Postemployment Retirement Benefits [Member]
202	1,596
2023	1,446
2024	1,485
2025	1,488
2026	1,537
Thereafter	$ 9,151

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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

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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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