Note 11 - Share-based Compensation - Defined Benefit Plan Amounts Recognized in Financial Statements (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Liability at the end of the year	$ 13,888	$ 12,382
Current liability	4,123	2,957
Non current liability	$ 9,765	$ 9,425

Amount of liability, recognized in statement of financial position, for defined benefit pension and other postretirement plans, classified as noncurrent.

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