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Income Taxes (Narrative) (Details) (USD $) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Effective Tax Rate | 26.20%us-gaap_EffectiveIncomeTaxRateContinuingOperations | 28.70%us-gaap_EffectiveIncomeTaxRateContinuingOperations | 31.60%us-gaap_EffectiveIncomeTaxRateContinuingOperations |
Income tax ruling exemption | $ 8,500,000 us-gaap_IncomeTaxHolidayAggregateDollarAmount | $ 6,500,000 us-gaap_IncomeTaxHolidayAggregateDollarAmount | $ 6,000,000 us-gaap_IncomeTaxHolidayAggregateDollarAmount |
Cumulative earnings of non-United States subsidiaries considered to be indefinitely invested outside of United States | 431,700,000 us-gaap_UndistributedEarningsOfForeignSubsidiaries |  |  |
Unrecognized tax benefits | 5,942,000 us-gaap_UnrecognizedTaxBenefits | 6,325,000 us-gaap_UnrecognizedTaxBenefits | 5,906,000 us-gaap_UnrecognizedTaxBenefits | 5,149,000 us-gaap_UnrecognizedTaxBenefits
Unrecognized tax benefits that would impact effective tax rate if recognized | 5,000,000 us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate | 5,700,000 us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate |  |
Interest expense and penalties related to unrecognized tax benefits | 300,000 us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense | 300,000 us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense | 300,000 us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense |
Interest expense and penalties accrued | 500,000 us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued | 600,000 us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued |  |
Positions for which it is reasonably possible that total amount of unrecognized tax benefits will significantly increase or decrease within 12 months of reporting date | 400,000 us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit |  |  |
Net operating loss carryforwards in certain state and international jurisdictions | 41,600,000 us-gaap_OperatingLossCarryforwards |  |  |
Valuation allowance against certain deferred tax assets related to net operating loss carryforwards | $ 4,700,000 us-gaap_OperatingLossCarryforwardsValuationAllowance |  |  |
Tax years no longer subject to U.S. federal examination [Member] |  |  |  |
Years before | 2013 |  |  |
With few exceptions, tax years no longer subject to state or local and international jurisdicition examination [Member] |  |  |  |
Years before | 2006 |  |  |
Switzerland [Member] |  |  |  |
Expiration date for tax holidays | December 31, 2015 |  |  |
Netherlands [Member] |  |  |  |
Expiration date for tax holidays | December 31, 2022 |  |  |

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- Definition Percentage 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 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 Reference 3: 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)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Subparagraph 2 -Article 4 + Details
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- Definition The amount of income taxes from which a reporting entity is exempt or for which it will receive a reduction in income taxes as a result of the income tax holiday granted by the taxing jurisdiction. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 11.C) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330215-122817 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 11 -Section C + Details
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- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319 + Details
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- Definition The amount of the unrecognized tax benefit of a position taken for which it is reasonably possible that the total amount thereof will significantly increase or decrease within twelve months of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 + Details
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