Note 8 - Pension - Amounts Recognized in Consolidated Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Pension asset	$ 5,712
Pension liability (current portion)	(2,543)	(3,282)
Pension liability	(46,619)	(45,206)
Pension Plan [Member]
Pension asset	5,712
Pension liability (current portion)	(2,543)	(3,282)
Pension liability	(46,619)	(45,206)
Net accrued pension liability	$ (43,450)	$ (48,488)

Amount of liability, recognized in statement of financial position, for defined benefit pension plan, classified as current. Excludes other postretirement benefit plan.

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

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