Cash, Cash Equivalents and Short-Term Investments - Unrealized Loss Position (Details) |
6 Months Ended |
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Jun. 30, 2019
USD ($)
item
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| Fair value and gross unrealized losses of investments in individual securities in unrealized loss position | |
| Weighted-average time to maturity of cash equivalents and available-for-sale securities | 73 days |
| Number of investments in continuous unrealized loss position for more than twelve months | 0 |
| Number of individual securities in unrealized loss position for twelve months or less | item | 20 |
| Other-than-temporary impairments of securities | $ 0 |
| Fair Value | 43,278,000 |
| Unrealized Losses | $ (8,000) |
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- Definition Represents the weighted-average period of maturity of cash equivalents and available-for-sale debt securities. No definition available.
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- References No definition available.
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- Definition Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for 12 months or longer. 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. 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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Number of investments in debt securities 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. No definition available.
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- Definition Amount of other-than-temporary impairment (OTTI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), recognized in earnings. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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