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Income Taxes (Narrative) (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 USD ($) countries | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($)
Income Tax Disclosure [Line Items] |  |  |
Number of countries in which operations constitute a taxable presence | countries | 18 |  |
Net increase (decrease) in valuation allowance | $ (200) |  |
Tax rates | 21.00% | 35.00% | 35.00%
Federal tax rate of deferred tax assets and liabilities | 21.00% |  |
Net operating loss carryforwards | $ 103,200 |  |
Net operating loss carryforwards, deferred tax asset | 23,100 |  |
Net operating loss carryforwards, valuation allowance | 7,800 |  |
Provisional transition tax | 1,600 | $ 600 |
Current year and prior year earnings of Company's foreign operations | 82,400 |  |
Foreign withholding taxes | 3,000 |  |
Accumulated undistributed earnings intended to remain permanently invested | 171,300 |  |
Recognized interest and penalties related to unrecognized tax benefits | 200 | 200 | $ 200
Accrued interest and penalties related to unrecognized tax benefits | 100 | 400 | 300
Taxes paid, net of refunds | 28,100 | 23,700 | 23,400
Reduction in provisional transition tax | 1,000 |  |
Federal tax benefit attributable to adjustments discovered | 10,700 | 1,881 | $ 2,138
State tax charge | $ 100 |  |
Decreased in effective tax rate | 0.90% |  |
Foreign tax credits | $ 24,300 |  |
Foreign tax credits available | $ 2,400 |  |
Percentager of Foreign tax credits | 2.30% |  |
Foreign-derived intangible income deduction | $ 3,400 |  |
Percentage of decreased effective rate | 0.60% |  |
Net decrease in tax audit settlements | $ 1,600 |  |
Brazil [Member] |  |  |
Income Tax Disclosure [Line Items] |  |  |
Tax rates | 34.00% |  |
China [Member] |  |  |
Income Tax Disclosure [Line Items] |  |  |
Tax rates | 25.00% |  |
Mexico [Member] |  |  |
Income Tax Disclosure [Line Items] |  |  |
Tax rates | 30.00% |  |
Valuation Allowance Deferred Tax Assets [Member] |  |  |
Income Tax Disclosure [Line Items] |  |  |
Net increase (decrease) in valuation allowance | $ (6,600) |  |
Credit refunded years | 2018 to 2022 |  |
Valuation Allowance due to Foreign Currency Translation [Member] |  |  |
Income Tax Disclosure [Line Items] |  |  |
Net increase (decrease) in valuation allowance | $ (900) |  |
Tax Attributes With Limited Lives [Member] |  |  |
Income Tax Disclosure [Line Items] |  |  |
Net deferred tax asset | $ 31,700 |  |
Earliest Tax Year [Member] |  |  |
Income Tax Disclosure [Line Items] |  |  |
Open tax years | 2007 |  |
Earliest Tax Year [Member] | Research and Development [Member] |  |  |
Income Tax Disclosure [Line Items] |  |  |
Tax credit carryforwards, expiration date | Jan. 01, 2025 |  |
Latest Tax Year [Member] |  |  |
Income Tax Disclosure [Line Items] |  |  |
Open tax years | 2018 |  |
State and Local Jurisdiction [Member] |  |  |
Income Tax Disclosure [Line Items] |  |  |
Net operating loss carryforwards | $ 19,400 |  |
AMT credit carryforward [Member] |  |  |
Income Tax Disclosure [Line Items] |  |  |
Tax credit carryforward | 1,300 |  |
Non-U.S. [Member] |  |  |
Income Tax Disclosure [Line Items] |  |  |
Tax credit carryforward | 24,300 |  |
Net deferred tax asset | 18,973 | 13,978 |
Non-U.S. [Member] | Research and Development [Member] |  |  |
Income Tax Disclosure [Line Items] |  |  |
Tax credit carryforward | $ 1,200 |  |
Non-U.S. [Member] | Earliest Tax Year [Member] |  |  |
Income Tax Disclosure [Line Items] |  |  |
Tax credit carryforwards, expiration date | Jan. 01, 2020 |  |
United States [Member] |  |  |
Income Tax Disclosure [Line Items] |  |  |
Net deferred tax asset | $ 36,100 |  |
Domestic Tax Authority [Member] |  |  |
Income Tax Disclosure [Line Items] |  |  |
Net deferred tax asset | 36,103 | $ 45,097 |
Domestic Tax Authority [Member] | Research and Development [Member] |  |  |
Income Tax Disclosure [Line Items] |  |  |
Tax credit carryforward | $ 6,200 |  |

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