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Income Taxes (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items] |  |  |
Foreign derived intangible income deduction benefit provided by the Tax Act | $ 1,315 | $ 1,206 |
Tax benefit from remeasurement of estimated net deferred tax liability |  |  | $ 27,153
Tax expense (benefit) from preliminary estimate of one-time transition tax and withholding tax |  |  | 14,743
Net tax benefit from enactment of the Tax Act |  |  | $ 12,410
Net tax benefit from enactment of the Tax Act, per diluted share |  |  | $ 0.08
Transition tax, noncurrent | 803 |  |
Unrecognized tax benefit, including interest and penalties | 17,318 |  |
Unrecognized tax benefits that would affect effective tax rate | 15,194 |  |
Amount of uncertain tax liability expected to be paid within one year | 4,896 |  |
Amount of uncertain tax liability included in Other long-term liabilities | 12,422 |  |
Unrecognized tax benefits related to lapse of statute of limitations, previously unrecognized | 3,435 |  |
Liabilities for tax-related interest and penalties | 1,962 | $ 1,289 | $ 1,175
Settlement and Lapse of Statute |  |  |
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items] |  |  |
Unrecognized tax benefits expected to be recognized within the next 12 months | $ 4,896 |  |

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- Definition Tax Cuts And Jobs Act Of 2017, Transition Tax For Accumulated Foreign Earnings, Income Tax Expense (Benefit) + References No definition available. + Details
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