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Fair Value Measurements (Tables) | 3 Months Ended
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Mar. 31, 2016
Fair Value Measurements |
Schedule of financial assets and liabilities measured on a recurring basis |
|  |  |  |  | Quoted Prices in |  |  |  |  |  |  |
|  |  |  |  | Active Markets |  | Significant Other |  | Significant Other |
|  |  |  |  | for Identical |  | Observable |  | Unobservable |
|  |  |  |  | Assets |  | Inputs |  | Inputs |
|  | Total |  | (Level 1) |  | (Level 2) |  | (Level 3) |
|  | (in thousands) |
Cash equivalents: |  |  |  |  |  |  |  |  |  |  |  |  |
Money market accounts |  | $ | 35,556 |  | $ | 35,556 |  | $ | — |  | $ | — |
Restricted short-term investments: |  |  |  |  |  |  |  |  |  |  |  |  |
Certificates of deposit |  |  | 1,285 |  |  | 1,285 |  |  | — |  |  | — |
Fair value measurement as of March 31, 2016 |  | $ | 36,841 |  | $ | 36,841 |  | $ | — |  | $ | — |
Cash equivalents: |  |  |  |  |  |  |  |  |  |  |  |  |
Money market accounts |  | $ | 42,486 |  | $ | 42,486 |  | $ | — |  | $ | — |
Restricted short-term investments: |  |  |  |  |  |  |  |  |  |  |  |  |
Certificates of deposit |  |  | 1,285 |  |  | 1,285 |  |  | — |  |  | — |
Fair value measurement as of December 31, 2015 |  | $ | 43,771 |  | $ | 43,771 |  | $ | — |  | $ | — |

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- Definition Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class 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 2 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 Reference 2: 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=36462937&loc=d3e19190-110258 + Details
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