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Financial Instruments (Tables) | 12 Months Ended
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Dec. 31, 2017
Financial Instruments |
Schedule of assets and liabilities measures 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, 2017 |
|  | Quoted Prices in Active Markets (Level 1) |  | Significant Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3) |  | Total |
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents: |  |  |  |  |  |  |  |  |  |  |  |  |
Money market funds |  | $ | 13,588 |  | $ | — |  | $ | — |  | $ | 13,588 |
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Total assets |  | $ | 13,588 |  | $ | — |  | $ | — |  | $ | 13,588 |
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|  | As of December 31, 2016 |
|  | Quoted Prices in Active Markets (Level 1) |  | Significant Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3) |  | Total |
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents: |  |  |  |  |  |  |  |  |  |  |  |  |
Money market funds |  | $ | 22,423 |  | $ | — |  | $ | — |  | $ | 22,423 |
Available-for-sale securities: |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate debt securities |  |  | — |  |  | 13,930 |  |  | — |  |  | 13,930 |
U.S. government-sponsored securities |  |  | — |  |  | 1,001 |  |  | — |  |  | 1,001 |
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Total assets |  | $ | 22,423 |  | $ | 14,931 |  | $ | — |  | $ | 37,354 |
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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/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19190-110258 + Details
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