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Fair Value Measurements (Tables) | 3 Months Ended
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Mar. 31, 2017
Fair Value Disclosures [Abstract] |
Summary of changes in the fair value of preferred stock warrants | The changes in the fair value of preferred stock warrants were as follows (in thousands):
|  | Three Months Ended March 31, 2016 |
Beginning balance |  | $ | 6,927 |
Change in value of preferred stock warrants recorded in other expense, net |  |  | 4,383 |
Reclassification to convertible preferred stock upon net exercise of Series Seed warrant |  |  | (3,789 | )
Ending balance |  | $ | 7,521 |
Schedule of assumptions utilized to determine the fair value of preferred stock warrants | The Company determined the fair value of the preferred stock warrants utilizing the Black-Scholes model with the following assumptions:
|  | As of March 31, 2016 |
|  | Series Seed |  |  | Series A3 |
Contractual term (years) |  |  | 5.4 |  |  |  | 7.0 |
Expected volatility |  |  | 61.1 | % |  |  | 61.1 | %
Risk-free interest rate |  |  | 1.30 | % |  |  | 1.54 | %
Estimated dividend yield |  |  | — | % |  |  | — | %

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- Definition Tabular disclosure of the inputs and valuation techniques used to measure fair value, and a discussion of changes in valuation techniques and related inputs, if any, applied during the period to each separate class of assets, liabilities, and financial instruments classified in shareholders' equity that are measured on a recurring and/or nonrecurring basis. + 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 (bbb) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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- Definition Tabular disclosure of the fair value measurement of liabilities using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and gains or losses recognized in other comprehensive income (loss) and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs) by class of liability. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19279-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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