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Summary of Significant Accounting Policies - Additional Information (Detail) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Mar. 31, 2018 USD ($) | Sep. 30, 2018 USD ($) Segment
Summary Of Significant Accounting Policies [Line Items] |  |
Number of operating business segments | Segment |  | 1
Operating lease right of use asset |  | $ 20,000
Operating lease right of use liability |  | 15,000
Accumulated Other Comprehensive Income (Loss) [Member] |  |
Summary Of Significant Accounting Policies [Line Items] |  |
Cumulative adjustment upon adoption of ASU 2018-02 | $ 356 | $ 356

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- Definition Operating lease right of use liability. + References No definition available. + Details
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- Definition Summary Of Significant Accounting Policies [Line Items] + References No definition available. + Details
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- Definition Tax Cuts and Jobs Act of 2017, reclassification from AOCI to retained earnings tax effect. + References No definition available. + Details
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- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. + References No definition available. + Details
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- Definition Amount of lessee's right to use underlying asset under operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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- Details
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