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Note 8 - Income Taxes - Net Deferred Tax Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Deferred tax assets | $ 13,222 | $ 15,444
Deferred tax liabilities | (559) | (591)
Net Deferred Tax Assets | $ 12,663 | $ 14,853

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