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Business, Product and Geographical Area Information and Concentration of Risk, Income Taxes Paid by Geographical Area (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Segment Reporting Information |  |  |  |
Income taxes paid | $ 0.4 | $ 0.3 | $ 3.3 | $ 0.8
Domestic |  |  |  |
Segment Reporting Information |  |  |  |
Income taxes paid | 0.4 | 0.3 | 1.3 | 0.7
Foreign |  |  |  |
Segment Reporting Information |  |  |  |
Income taxes paid | $ 0.0 | $ 0.0 | $ 2.0 | $ 0.1

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- Definition The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4297-108586 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3536-108585 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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- Details
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