Cash, Cash Equivalents and Investments - Summary of Available-for-sale Securities' Fair Value and Gross Unrealized Losses (Details) - USD ($) $ in Thousands |
Jun. 30, 2017 |
Dec. 31, 2016 |
|---|---|---|
| Fair Value | ||
| Twelve Months or Less | $ 18,056 | $ 34,257 |
| More than Twelve Months | 0 | 4,099 |
| Total | 18,056 | 38,356 |
| Gross Unrealized Losses | ||
| Twelve Months or Less | (10) | (52) |
| More than Twelve Months | 0 | (3) |
| Total | (10) | (55) |
| Corporate debt securities | ||
| Fair Value | ||
| Twelve Months or Less | 18,056 | 34,257 |
| More than Twelve Months | 0 | 4,099 |
| Total | 18,056 | 38,356 |
| Gross Unrealized Losses | ||
| Twelve Months or Less | (10) | (52) |
| More than Twelve Months | 0 | (3) |
| Total | $ (10) | $ (55) |
| X | ||||||||||
- Definition Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale that have been in a continuous loss position for twelve months or longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale in a continuous loss position. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition This item represents the aggregate fair value of investments in debt and equity securities in an unrealized loss position which are categorized neither as held-to-maturity nor trading securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale that have been in a continuous loss position for less than twelve months. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- 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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| X | ||||||||||
- 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 twelve months or longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Details
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