v3.3.1.900

Description of the Business (Details) - USD ($) $ / shares in Units, $ in Millions | Sep. 30, 2015 | Apr. 02, 2014
--- | --- | ---
Public Offering |  |
Common stock sold and issued (in shares) |  | 8,626,377
Issuance price (in dollars per share) | $ 34.00 | $ 13.00
Net proceed from IPO. after deducting underwriting discounts and commissions and other offering expenses |  | $ 100.3
Net proceeds from sale of common stock net accrued costs | $ 117.1 |
Underwriting discounts and commissions | 5.5 | 7.8
Offering expenses | $ 0.6 | $ 4.0
Redeemable convertible preferred stock converted into shares of common stock |  | 23,501,208
Preferred stock warrant liability |  | $ 0.8
Public |  |
Public Offering |  |
Common stock sold and issued (in shares) | 3,625,000 |
Underwriters' over-allotment option |  |
Public Offering |  |
Common stock sold and issued (in shares) | 525,000 |

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