Note 8 - Benefit Plans - Projected Benefit Payments (Details) $ in Thousands	Dec. 31, 2021 USD ($)
2022	$ 233
2023	1,214
2024	606
2025	598
2026	598
2027-2031	4,406
Pension Plan [Member]
2022	131
2023	0
2024	0
2025	0
2026	0
2027-2031	0
Supplemental Employee Retirement Plan [Member]
2022	102
2023	1,214
2024	606
2025	598
2026	598
2027-2031	$ 4,406

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

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

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

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

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