v2.4.0.8

Warrants (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 3 Months Ended | 12 Months Ended | 0 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 31, 2014 | Mar. 31, 2013 | Dec. 31, 2013 | Apr. 02, 2014 Subsequent Event | Mar. 31, 2014 Warrant issued to purchase Series D redeemable convertible preferred stock expiring in 2022 | Dec. 31, 2013 Warrant issued to purchase Series D redeemable convertible preferred stock expiring in 2022 | Apr. 30, 2012 Warrant issued to purchase Series D redeemable convertible preferred stock expiring in 2022 | Mar. 31, 2014 Warrant issued to purchase Series D redeemable convertible preferred stock expiring in 2023 | Dec. 31, 2013 Warrant issued to purchase Series D redeemable convertible preferred stock expiring in 2023
Warrants |  |  |  |  |  |  |  |  |
Number of shares of preferred stock that may be purchased by warrant |  |  |  |  |  |  | 12,797 |  | 71,021
Exercise price of warrant (in dollars per share) |  |  |  |  |  |  | $ 7.81 |  | $ 7.81
Fair value of warrant (in dollars per share) |  |  |  |  | $ 119 | $ 19 | $ 74 | $ 695 | $ 107
Reductions of interest expense | (688) | 8 | 33 |  |  |  |  |  |
Amount of warrants liability reclassified to additional paid in capital on conversion of warrants to purchase Series D redeemable convertible preferred stock |  |  |  | $ 814 |  |  |  |  |

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- Definition Represents the amount reclassified to additional paid-in capital on conversion of warrants to purchase Series D redeemable convertible preferred stock to warrants to purchase common stock. + References No definition available. + Details
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- Definition Exercise price per share or per unit of warrants or rights outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(i)(4)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph i -Subparagraph 4 -Article 4 + Details
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- Definition Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(i)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph i -Subparagraph 2 -Article 4 + Details
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- Definition Amount of expense (income) related to adjustment to fair value of warrant liability. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section 25 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6939902&loc=d3e20148-110875 + Details
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- Definition Fair value portion of warrants not settleable in cash classified as equity. + 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) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
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