Fair Value Measurements |
Fair Value Measurements
The following table presents our fair value hierarchy for our assets measured at fair value on a recurring basis at June 30, 2018 (in thousands): | | | | | | | | | | | | | | Level 1 | | Level 2 | | Total | Cash equivalents: | | | | | | Money market funds | $ | 176,304 |
| | $ | — |
| | $ | 176,304 |
| Commercial paper | — |
| | 173,604 |
| | 173,604 |
| Corporate notes and bonds | — |
| | 6,598 |
| | 6,598 |
| Short-term investments: | | | | | | Commercial paper | — |
| | 253,518 |
| | 253,518 |
| Corporate notes and bonds | — |
| | 678,619 |
| | 678,619 |
| Certificates of deposit | — |
| | 29,844 |
| | 29,844 |
| U.S. government agency securities | — |
| | 82,831 |
| | 82,831 |
| Long-term investments: | | | | | | Corporate notes and bonds | — |
| | 272,060 |
| | 272,060 |
| Certificates of deposit | — |
| | 2,900 |
| | 2,900 |
| U.S. government agency securities | — |
| | 29,669 |
| | 29,669 |
| Total | $ | 176,304 |
| | $ | 1,529,643 |
| | $ | 1,705,947 |
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The following table presents our fair value hierarchy for our assets measured at fair value on a recurring basis at December 31, 2017 (in thousands): | | | | | | | | | | | | | | Level 1 | | Level 2 | | Total | Cash equivalents: | | | | | | Money market funds | $ | 282,507 |
| | $ | — |
| | $ | 282,507 |
| Commercial paper | — |
| | 100,456 |
| | 100,456 |
| Corporate notes and bonds | — |
| | 50,437 |
| | 50,437 |
| Short-term investments: | | | | | | Commercial paper | — |
| | 258,344 |
| | 258,344 |
| Corporate notes and bonds | — |
| | 688,316 |
| | 688,316 |
| Certificates of deposit | — |
| | 17,950 |
| | 17,950 |
| U.S. government agency securities | — |
| | 67,476 |
| | 67,476 |
| Marketable equity securities | 20,717 |
| | — |
| | 20,717 |
| Long-term investments: | | | | | | Corporate notes and bonds | — |
| | 314,928 |
| | 314,928 |
| Certificates of deposit | — |
| | 15,134 |
| | 15,134 |
| U.S. government agency securities | — |
| | 61,380 |
| | 61,380 |
| Total | $ | 303,224 |
| | $ | 1,574,421 |
| | $ | 1,877,645 |
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We determine the fair value of our security holdings based on pricing from our service providers and market prices from industry-standard independent data providers. Such market prices may be quoted prices in active markets for identical assets (Level 1 inputs) or pricing determined using inputs other than quoted prices that are observable either directly or indirectly (Level 2 inputs), such as yield curve, volatility factors, credit spreads, default rates, loss severity, current market and contractual prices for the underlying instruments or debt, broker and dealer quotes, as well as other relevant economic measures.
See Note 3 for the fair value measurement of our debt investments in privately-held companies, Note 8 for the fair value measurement of our derivative contracts and Note 11 for the fair value measurement of our convertible senior notes.
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