Cash, Cash Equivalents and Short-Term Investments - Unrealized Loss Position (Details) $ in Thousands |
3 Months Ended |
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Mar. 31, 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 | 61 days |
| Number of investments in continuous unrealized loss position for more than twelve months | item | 0 |
| Number of individual securities in unrealized loss position for twelve months or less | item | 32 |
| Other-than-temporary impairments of securities | $ 0 |
| Fair Value | 69,359 |
| Unrealized Losses | $ (12) |
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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 Amount of unrealized loss on investments in available-for-sale securities that have been in a loss position for less than twelve months. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition This item represents the aggregate fair value of investments in debt and equity securities categorized neither as held-to-maturity nor trading securities that have been in a continuous unrealized loss position for less than twelve months. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Number of investment positions in available-for-sale investments in a continuous unrealized loss position for less than one year or normal operating cycle, if longer, for which an other-than-temporary impairment (OTTI) has not been recognized in the income statement. No definition available.
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- Definition Number of investment positions in available-for-sale investments that have been in a continuous unrealized loss position for greater than or equal to a year for which an other-than-temporary impairment (OTTI) has not been recognized in the income statement. No definition available.
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- Definition The amount by which the fair value of an investment in debt and equity securities categorized as Available-for-sale is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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