v3.20.2

Fair Value Measurements (Tables) | 6 Months Ended
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Jun. 30, 2020
Fair Value Disclosures [Abstract] |
Assets Measured at Fair Value on Recurring Basis | The following table presents our fair value hierarchy for our assets measured at fair value on a recurring basis as of June 30, 2020 (in thousands):
| Level 1 |  | Level 2 |  |  |  | Total
Cash equivalents: |  |  |  |  |  |  |
Money market funds | $ | 489,607 |  |  | $ | — |  |  |  |  | $ | 489,607 |
Commercial paper | — |  |  | 47,691 |  |  |  |  | 47,691 |
Corporate notes and bonds | — |  |  | 20,944 |  |  |  |  | 20,944 |
Certificates of deposit | — |  |  | 5,002 |  |  |  |  | 5,002 |
U.S. government and agency securities | — |  |  | 28,228 |  |  |  |  | 28,228 |
Marketable securities: |  |  |  |  |  |  |
Commercial paper | — |  |  | 415,103 |  |  |  |  | 415,103 |
Corporate notes and bonds | — |  |  | 1,586,235 |  |  |  |  | 1,586,235 |
Certificates of deposit | — |  |  | 20,098 |  |  |  |  | 20,098 |
U.S. government and agency securities | — |  |  | 260,733 |  |  |  |  | 260,733 |
Total | $ | 489,607 |  |  | $ | 2,384,034 |  |  |  |  | $ | 2,873,641 |
The following table presents our fair value hierarchy for our assets measured at fair value on a recurring basis as of December 31, 2019 (in thousands):
| Level 1 |  | Level 2 |  | Total
Cash equivalents: |  |  |  |  |
Money market funds | $ | 486,982 |  |  | $ | — |  |  | $ | 486,982 |
Commercial paper | — |  |  | 86,388 |  |  | 86,388 |
Marketable securities: |  |  |  |  |
Commercial paper | — |  |  | 101,490 |  |  | 101,490 |
Corporate notes and bonds | — |  |  | 1,661,330 |  |  | 1,661,330 |
Certificates of deposit | — |  |  | 38,045 |  |  | 38,045 |
U.S. government and agency securities | — |  |  | 127,784 |  |  | 127,784 |
Total | $ | 486,982 |  |  | $ | 2,015,037 |  |  | $ | 2,502,019 |

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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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