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Fair Value Measurements (Tables) | 6 Months Ended
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Jun. 30, 2019
Fair Value Disclosures [Abstract] |
Summary of Assets and Liabilities Measured at Fair Value on Recurring Basis | The following table presents information about our assets and liabilities that are measured at fair value on a recurring basis, and indicates the fair value hierarchy of the valuation techniques we utilized to determine such fair value (in thousands):
June 30, 2019 |  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash |  | $ | 2,033 |  |  | $ | — |  |  | $ | — |  |  | $ | 2,033 |
Money market securities (cash equivalents) |  |  | 8,413 |  |  |  | — |  |  |  | — |  |  |  | 8,413 |
Restricted cash |  |  | 50 |  |  |  | — |  |  |  | — |  |  |  | 50 |
Corporate bonds and commercial paper (short term investments) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Total assets |  | $ | 10,496 |  |  | $ | — |  |  | $ | — |  |  | $ | 10,496 |
Summary of Cash, Cash Equivalents and Short-Term Investments | Cash, cash equivalents and short-term investments consist of the following (in thousands):
|  |  |  |  |  | Gross |  |  | Gross |  |  |  |  |
|  | Amortized |  |  | Unrealized |  |  | Unrealized |  |  | Estimated |
June 30, 2019 |  | Cost |  |  | Gains |  |  | Losses |  |  | Fair Value |
Cash |  | $ | 2,033 |  |  | $ | — |  |  | $ | — |  |  | $ | 2,033 |
Money market securities |  |  | 8,413 |  |  |  | — |  |  |  | — |  |  |  | 8,413 |
Total cash and cash equivalents |  | $ | 10,446 |  |  | $ | — |  |  | $ | — |  |  | $ | 10,446 |
Money market securities (restricted cash) |  |  | 50 |  |  |  | — |  |  |  | — |  |  |  | 50 |
Total restricted cash |  | $ | 50 |  |  | $ | — |  |  | $ | — |  |  | $ | 50 |
Corporate bonds and commercial paper |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Total short-term investments |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |

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- Definition Tabular disclosure of the components of cash, cash equivalents, and investments. + References No definition available. + Details
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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19190-110258 + Details
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