Other income (expense), net (Details) - USD ($) |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2018 |
Sep. 30, 2017 |
Sep. 30, 2018 |
Sep. 30, 2017 |
|
| Other income (expense), net | ||||
| Realized foreign exchange (losses) gains | $ (179,000) | $ 191,000 | $ (2,869,000) | $ 703,000 |
| Unrealized foreign exchange (losses) gains | (2,006,000) | 3,680,000 | (4,921,000) | 6,886,000 |
| Losses on redemption or maturity of available-for-sale debt securities | 0 | (2,473,000) | ||
| Other | (64,000) | (269,000) | (262,000) | (348,000) |
| Other income (expense), net | $ (2,249,000) | $ 3,602,000 | $ (10,525,000) | $ 7,242,000 |
| X | ||||||||||
- Definition Amount of other income (expense) related to nonoperating activities, classified as other. No definition available.
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| X | ||||||||||
- 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). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount before tax of foreign currency transaction unrealized gain (loss) recognized in the income statement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of income (expense) related to nonoperating activities, classified as other. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- References No definition available.
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