Marketable Securities - Continuous Unrealized Loss Position (Details) $ in Thousands |
Jun. 30, 2019
USD ($)
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|---|---|
| Investments in an Unrealized Loss Position | |
| Fair Value | $ 593,461 |
| Gross Unrealized Losses | (1,230) |
| Corporate debt securities | |
| Investments in an Unrealized Loss Position | |
| Fair Value | 321,972 |
| Gross Unrealized Losses | (580) |
| Sovereign securities | |
| Investments in an Unrealized Loss Position | |
| Fair Value | 1,999 |
| Gross Unrealized Losses | (8) |
| U.S. Government agency securities | |
| Investments in an Unrealized Loss Position | |
| Fair Value | 126,694 |
| Gross Unrealized Losses | (241) |
| U.S. Treasury securities | |
| Investments in an Unrealized Loss Position | |
| Fair Value | 142,796 |
| Gross Unrealized Losses | $ (401) |
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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. 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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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