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Income Taxes (Deferred Tax Assets and Liabilities Classified in Consolidated Balance Sheets) (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
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Income Tax Disclosure [Abstract] |  |
Deferred tax assets (under "Other non-current assets") | $ 2,118 | $ 1,338
Deferred tax liabilities | 41 | 1,662
Net deferred tax asset | $ 2,077 |
Net deferred tax liabilities |  | $ (324)

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