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Fair Value of Financial Instruments (Tables) | 12 Months Ended
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Dec. 31, 2019
Fair Value Disclosures [Abstract] |
Schedule of Company's Classified Assets Measured at Fair Value on Recurring Basis | At December 31, 2019 and 2018, the Company has classified assets measured at fair value on a recurring basis as follows (in thousands):
|  | Fair Value Measurements at Reporting Date Using |
|  | December 31, |  |  | Quoted Prices in Active Markets for Identical Assets |  |  | Significant Other Observable Inputs |  |  | Significant Unobservable Inputs |
Description |  | 2019 |  |  | (Level 1) |  |  | (Level 2) |  |  | (Level 3) |
Money market funds |  | $ | 3,240 |  |  | $ | 3,240 |  |  | $ | — |  |  | $ | — |
Commercial paper (included in cash and cash equivalents) |  |  | 4,249 |  |  |  | — |  |  |  | 4,249 |  |  |  | — |
Commercial paper (included in marketable securities) |  |  | 20,501 |  |  |  | — |  |  |  | 20,501 |  |  |  | — |
Corporate debt securities (included in cash and cash equivalents) |  |  | 6,005 |  |  |  | — |  |  |  | 6,005 |  |  |  | — |
Corporate debt securities (included in marketable securities) |  |  | 71,383 |  |  |  | — |  |  |  | 71,383 |  |  |  | — |
U.S. government agency securities and treasuries |  |  | 9,005 |  |  |  | — |  |  |  | 9,005 |  |  |  | — |
Total |  | $ | 114,383 |  |  | $ | 3,240 |  |  | $ | 111,143 |  |  | $ | — |
|  | Fair Value Measurements at Reporting Date Using |
|  | December 31, |  |  | Quoted Prices in Active Markets for Identical Assets |  |  | Significant Other Observable Inputs |  |  | Significant Unobservable Inputs |
Description |  | 2018 |  |  | (Level 1) |  |  | (Level 2) |  |  | (Level 3) |
Money market funds |  | $ | 265 |  |  | $ | 265 |  |  | $ | — |  |  | $ | — |
Commercial paper (included in short-term investments) |  |  | 57,453 |  |  |  | — |  |  |  | 57,453 |  |  |  | — |
Corporate debt securities (included in short-term investments) |  |  | 50,052 |  |  |  | — |  |  |  | 50,052 |  |  |  | — |
U.S. government agency securities and treasuries |  |  | 3,972 |  |  |  | 1,987 |  |  |  | 1,985 |  |  |  | — |
Total |  | $ | 111,742 |  |  | $ | 2,252 |  |  | $ | 109,490 |  |  | $ | — |

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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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