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Income Taxes (Reconciliation of the Beginning and Ending Amount of Unrecognized Tax Benefits) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Income Tax Disclosure [Abstract] |  |  |
Unrecognized tax benefits balance at January 1st | $ 3,790 | $ 4,509 | $ 4,183
Increase in gross amounts of tax positions related to prior years | 4,874 | 2,008 | 480
Decrease in gross amounts of tax positions related to prior years | (2,239) | (358) | (50)
Increase in gross amounts of tax positions related to current years |  |  |
Decrease due to settlements with tax authorities |  | (1,626) | (381)
Decrease due to lapse in statute of limitations | (626) | (479) | (29)
Currency translation decrease |  | (264) |
Currency translation increase | 35 |  | 306
Unrecognized tax benefits balance at December 31 | $ 5,834 | $ 3,790 | $ 4,509

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