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Income Taxes (Schedule of Components of Income Tax (Benefit)/Expense) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Income Tax Disclosure [Abstract] |  |  |
Income tax based on income from continuing operations, at estimated tax rates of 32%, 35%, and 32%, respectively | $ 17,519 | $ 27,629 | $ 16,388
Income tax before discrete items | 17,519 | 27,629 | 16,388
Discrete tax expense (benefit): |  |  |
Worthless stock deduction |  |  | (28,553)
Net impact of mandatory deemed repatriations | 5,758 |  |
Provision for/resolution of tax audits and contingencies, net | 1,329 | (2,856) | 6,500
Adjustments to prior period tax liabilities | (840) | 586 | (867)
Provision for/adjustment to beginning of year valuation allowances | (3,522) | (88) | 75
Enacted tax legislation | 1,879 | 183 | 670
Total income tax expense/(benefit) | $ 22,123 | $ 25,454 | $ (5,787)
Estimated tax rate | 32.00% | 35.00% | 32.00%

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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, attributable to increase (decrease) in the income tax legislation. + References No definition available. + Details
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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