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Note 8 - Employee Benefit Plans - Change in Benefit Obligation (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Benefit obligation	$ 13,263	$ 22,562	$ 25,519
Fair value of plan assets	15,576	27,252	$ 23,926
Net funded status	1,734	3,799
Pension Plan [Member]
Benefit obligation	13,263	22,562
Fair value of plan assets	15,576	27,252
Net funded status	$ 2,313	$ 4,690

X

- Definition

Amount of asset (liability), recognized in statement of financial position, for defined benefit pension and other postretirement plans.

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X

- Definition

Amount of actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.

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Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

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