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Note 12 - Accumulated Other Comprehensive Loss - Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Foreign currency translation adjustment, net of taxes	$ (25,489)	$ (22,635)
Unrealized holding gains on available-for-sale securities, net of taxes	12	12
Unfunded SERP liability, net of taxes	(2,568)	(2,215)
Accumulated other comprehensive loss	$ (28,045)	$ (24,838)

Accumulated adjustment, net of tax, that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency from the functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains or losses.

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