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Note 8 - Employee Retirement Plans - Amounts Recognized In Other Comprehensive Income Loss (Details) - Pension Plan [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net (gain) loss	$ (3,472)	$ (568)	$ 2,612
Settlement recognized	0	0	(182)
Total recognized in other comprehensive (income) loss, before tax and net of tax	$ (3,472)	$ (568)	$ 2,430

X

- Definition

Amount, before tax, of increase (decrease) to other comprehensive income from settlement and curtailment gain (loss) of defined benefit plan.

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