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Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2019 | Mar. 31, 2018
Accounting Policies [Abstract] |  |
Cost of revenues | $ 3,839 | $ 1,607
Operating expense | 12,585 | 6,904
General and administrative expense | $ 672 | $ 1,147

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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 Depreciation and amortization of property, plant and equipment directly related to goods produced and sold and services rendered by an entity during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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