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Basis of Presentation and Summary of Significant Accounting Policies - Business Combinations (Detail) - USD ($) $ in Thousands | 1 Months Ended | 12 Months Ended
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Oct. 31, 2017 | Dec. 31, 2017
Basis of Presentation and Summary of Significant Accounting Policies |  |
Cash paid for certain assets acquisition | $ 3,000 | $ 3,000

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- References No definition available. + Details
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- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585 + Details
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