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v3.19.1

Business Segment and Geographic Information (Tables) | 3 Months Ended
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Mar. 31, 2019
Segment Reporting [Abstract] |
Revenue from External Customers by Geographic Areas | The following table sets forth revenues by our two primary geographical markets, United States and outside of the United States, based on the geographic location to which we deliver the product:
| Three Months Ended March 31, 2019 |  | Three Months Ended March 31, 2018
(In millions) | Amount |  | % of Total |  | Amount |  | % of Total
Revenues: |  |  |  |  |  |  |
United States | $ | 210.5 |  |  | 75 | % |  | $ | 145.4 |  |  | 79 | %
Outside of the United States | 70.0 |  |  | 25 | % |  | 39.0 |  |  | 21 | %
Total | $ | 280.5 |  |  | 100 | % |  | $ | 184.4 |  |  | 100 | %
Disaggregation of Revenue | The following table sets forth revenues disaggregated by customer sales channel:
| Three Months Ended March 31, 2019 |  | Three Months Ended March 31, 2018
(In millions) | Amount |  | % of Total |  | Amount |  | % of Total
Revenues: |  |  |  |  |  |  |
Distributor | $ | 187.8 |  |  | 67 | % |  | $ | 118.3 |  |  | 64 | %
Direct | 92.7 |  |  | 33 | % |  | 66.1 |  |  | 36 | %
Total | $ | 280.5 |  |  | 100 | % |  | $ | 184.4 |  |  | 100 | %

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- Definition Tabular disclosure of revenue from external customers by geographic areas attributed to the entity's country of domicile and to foreign countries from which the entity derives revenue. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph a -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e9038-108599 + Details
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