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Fair Value Measurements | 3 Months Ended
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Mar. 31, 2017
Fair Value Disclosures [Abstract] |
Fair Value Measurements | Note 4—Fair Value Measurements The Company had no material financial instruments that were measured at fair value as of March 31, 2017 and December 31, 2016. The Company had convertible preferred stock warrants prior to its initial public offering in September 2016. The Company’s preferred stock warrants were recorded at fair value, which increased during the three months ended March 31, 2016 due to an increase in the valuation of the Company’s preferred stock. 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 |
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 The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14172-108612 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14064-108612 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13537-108611 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13504-108611 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13433-108611 + Details
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