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Financial Instruments (Tables) | 12 Months Ended
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Dec. 31, 2019
Financial Instruments |
Summary of assets and liabilities measured at fair value on a recurring basis | Below is a summary of assets and liabilities measured at fair value on a recurring basis (in thousands):
|  | As of December 31, 2019
|  | Quoted Prices |  | Significant |  | Significant |  |  |
|  | in Active |  | Observable |  | Unobservable |  |  |
|  | Markets |  | Inputs |  | Inputs |  |  |
|  | (Level 1) |  | (Level 2) |  | (Level 3) |  | Total
Assets: |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents: |  |  |  |  |  |  |  |  |  |  |  |
Money market funds |  | $ | 5,432 |  | $ | — |  | $ | — |  | $ | 5,432
Corporate debt securities |  |  | — |  |  | 1,937 |  |  | — |  |  | 1,937
Short-term investments: |  |  |  |  |  |  |  |  |  |  |  |
Commercial paper |  |  | — |  |  | 1,993 |  |  | — |  |  | 1,993
Corporate debt securities |  |  | — |  |  | 3,352 |  |  | — |  |  | 3,352
Reverse repurchase agreements |  |  | — |  |  | 21,000 |  |  | — |  |  | 21,000
Total assets |  | $ | 5,432 |  | $ | 28,282 |  | $ | — |  | $ | 33,714
|  | As of December 31, 2018
|  | Quoted Prices |  | Significant |  | Significant |  |  |
|  | in Active |  | Observable |  | Unobservable |  |  |
|  | Markets |  | Inputs |  | Inputs |  |  |
|  | (Level 1) |  | (Level 2) |  | (Level 3) |  | Total
Assets: |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents: |  |  |  |  |  |  |  |  |  |  |  |
Money market funds |  | $ | 5,956 |  | $ | — |  | $ | — |  | $ | 5,956
Corporate debt securities |  |  | — |  |  | 1,948 |  |  | — |  |  | 1,948
Reverse repurchase agreements |  |  | — |  |  | 3,000 |  |  | — |  |  | 3,000
Short-term investments: |  |  |  |  |  |  |  |  |  |  |  |
Corporate debt securities |  |  | — |  |  | 7,276 |  |  | — |  |  | 7,276
Reverse repurchase agreements |  |  | — |  |  | 15,000 |  |  | — |  |  | 15,000
Total assets |  | $ | 5,956 |  | $ | 27,224 |  | $ | — |  | $ | 33,180

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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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