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Segment Information and Geographic Information (Tables) | 12 Months Ended
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Dec. 31, 2016
Segment Reporting [Abstract] |
Geographical Data for Operations | The following represents geographical data for our operations as of and for the years ended December 31, 2016, 2015 and 2014:
(in thousands) |  | 2016 |  |  | 2015 |  |  | 2014 |
Revenue: |  |  |  |  |  |  |  |  |  |  |  |
United States |  | $ | 13,641 |  |  | $ | 10,519 |  |  | $ | 8,149 |
International |  |  | 3,606 |  |  |  | 2,940 |  |  |  | 2,605 |
|  | $ | 17,247 |  |  | $ | 13,459 |  |  | $ | 10,754 |

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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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph a -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9038-108599 + Details
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