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Note 8 - Benefit Plans - Pension Plans With Projected Benefit Obligation in Excess of Plan Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Projected benefit obligation	$ 15,654	$ 33,115
Fair value of plan assets	(546)	(18,754)
Underfunded (Overfunded)	15,108	14,361
Pension Plan [Member]
Projected benefit obligation	131	18,778
Fair value of plan assets	(546)	(18,754)
Underfunded (Overfunded)	(415)	24
Supplemental Employee Retirement Plan [Member]
Projected benefit obligation	15,523	14,337
Fair value of plan assets	0	0
Underfunded (Overfunded)	$ 15,523	$ 14,337

X

- Definition

The funded status of a pension plan with benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented.

+ References

No definition available.

+ Details

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Period Type:	instant

X

- Definition

Amount of plan asset for defined benefit pension plan with projected benefit obligation in excess of plan assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e2417-114920

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 55
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=123450688&loc=d3e4179-114921

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X

- Definition

Amount of projected benefit obligation for defined benefit pension plan with projected benefit obligation in excess of plan assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e2417-114920

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 55
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=123450688&loc=d3e4179-114921

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X

- Details

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