Cash, Cash Equivalents and Investments - Narrative (Details) |
Sep. 30, 2018
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| Cash and Cash Equivalents [Abstract] | |
| Unrealized gains | $ 0 |
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- Definition Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) 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://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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