Financial Instruments - Schedule of Marketable Securities That Were in Continuous Unrealized Loss Position for Less than 12 months and for 12 months or Greater (Detail) $ in Thousands |
Dec. 31, 2018
USD ($)
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| Cash And Cash Equivalents [Abstract] | |
| Fair Value of Marketable Securities, Continuous Unrealized Losses, Less than 12 Months | $ 13,565 |
| Fair Value of Marketable Securities, Continuous Unrealized Losses, Total | 13,565 |
| Unrealized Losses, Continuous Unrealized Losses, Less Than 12 Months | (48) |
| Unrealized Losses, Continuous Unrealized Losses, Total | $ (48) |
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- References No definition available.
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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for less than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for less than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position without allowance for credit loss. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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