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Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
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Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Accounting Policies [Abstract] |  |  |  |
Cost of revenues | $ 1,620 | $ 1,568 | $ 4,866 | $ 4,510
Operating expense | 7,155 | 5,523 | 20,560 | 16,701
General and administrative expense | $ 1,297 | $ 610 | $ 3,345 | $ 1,981

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- Definition Operating Expense, Depreciation And Amortization + References No definition available. + Details
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- Definition Selling, General And Administrative Expense, Depreciation And Amortization + References No definition available. + Details
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- References No definition available. + Details
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- Definition The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2(a),(d)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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