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Note 8 - Employee Benefit Plans - Defined Benefit Pension Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Interest cost	$ 391	$ 484
Expected return on plan assets	(733)	(761)
Net amortization loss	105	336
Recognition of net loss due to settlements	22	228
Net periodic benefit (credit) cost	$ (215)	$ 287

X

- Definition

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

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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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