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Note 23 - Pension Plan (Details Textual) - Pension Plan [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Settlement Amendment of Contract, Total		$ 45,388
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		10
Defined Benefit Plan, Benefit Obligation, Ending Balance		$ 1,813
Gain (Loss) from Termination of Defined Benefit Plan	$ 2,093

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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