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Redeemable Convertible Preferred Stock (Tables) | 12 Months Ended
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Dec. 31, 2014
Temporary Equity Disclosure [Abstract] |
Schedule of Preferred Stock | As of December 31, 2013, preferred stock consisted of the following (in thousands, except share data):
|  | Preferred Shares Authorized |  |  | Issuance Date |  | Preferred Shares Issued and Outstanding |  |  | Redemption Value /Liquidation Preference |  |  | Carrying Value |
Seed |  |  | 2,500,000 |  |  | December 2006 |  |  | 2,500,000 |  |  | $ | 2,000 |  |  | $ | 2,000 |
Series A |  |  | 9,307,692 |  |  | May 2007 |  |  | 9,307,692 |  |  |  | 12,100 |  |  |  | 12,100 |
Series B |  |  | 4,077,500 |  |  | December 2007 |  |  | 3,562,500 |  |  |  | 7,125 |  |  |  | 7,125 |
Series B-1 |  |  | 5,000,000 |  |  | July 2009 |  |  | 4,842,500 |  |  |  | 9,685 |  |  |  | 9,685 |
Series C |  |  | 33,310,787 |  |  | November 2010 and June 2011 |  |  | 31,836,392 |  |  |  | 23,559 |  |  |  | 23,094 |
Series D |  |  | 34,698,793 |  |  | December 2011 and November 2012 |  |  | 33,158,272 |  |  |  | 27,521 |  |  |  | 27,521 |
|  |  | 88,894,772 |  |  |  |  |  | 85,207,356 |  |  | $ | 81,990 |  |  | $ | 81,525 |

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- Definition Tabular disclosure of temporary equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph d -Article 4 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 28 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (27) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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