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Fair Value Measurements - Summary of Company's Fair Value Hierarchy for its Financial Assets and Liabilities (Parenthetical) (Detail) - Fair Value, Measurements, Recurring [Member] $ in Thousands | 12 Months Ended
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Dec. 31, 2018 USD ($)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
Fair value of liabilities | $ 4,196
Accrued Expenses and Other Current Liabilities [Member] |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
Fair value of liabilities | 1,800
Non-current Liabilities [Member] |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
Fair value of liabilities | 2,400
Corporate Obligations [Member] |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
Realized, loss | $ 200

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- Definition Amount of realized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27357-111563 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Fair value of financial obligations, including, but not limited to, debt instruments, derivative liabilities, federal funds purchased and sold under agreements to repurchase, securities loaned or sold under agreements to repurchase, financial instruments sold not yet purchased, guarantees, line of credit, loans and notes payable, servicing liability, and trading liabilities. + References No definition available. + Details
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