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Note 8 - Employee Benefit Plans - Net Periodic Benefit Costs (Details) - Pension Plan And Supplemental Plan [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Interest cost	$ 578	$ 543
Expected return on plan assets	(752)	(543)
Amortization of net actuarial losses	16	36
Net periodic pension cost (benefit)	$ (158)	$ 36

X

- Definition

Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan.

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Amount of cost recognized for passage of time related to defined benefit plan.

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