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Income Taxes (Narrative) (Details) - USD ($) $ in Thousands | 6 Months Ended
--- | ---
Jun. 30, 2017 | Jun. 30, 2016
Income Tax Disclosure [Line Items] |  |
Unrepatriated foreign earnings | $ 4,500 |
Net increase from the reevaluation of uncertain tax positions arising in examinations | 600 |
Net decrease from the reevaluation of uncertain tax positions arising in examinations | $ 400 |
Income Tax Expense Benefit Estimated Tax Rate | 32.80% | 38.70%
Non-U.S. earnings that have been targeted for future repatriation | $ 62,600 |
Earliest Tax Year [Member] |  |
Income Tax Disclosure [Line Items] |  |
Open tax years | 2007 |
Latest Tax Year [Member] |  |
Income Tax Disclosure [Line Items] |  |
Open tax years | 2016 |

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