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Other Capital Stock Agreements (Details) - USD ($) $ / shares in Units, $ in Millions | 1 Months Ended |
--- | --- | ---
Nov. 30, 2014 | May. 20, 2015
Schedule of Capitalization, Equity |  |
Stock Issued During Period, Shares, New Issues | 7,944,133 |
Offering Price Per Share | $ 7.035 |
Net Proceeds From Stock Offering | $ 201.9 |
Payments of Underwriting Discounts and Commissions | 3.4 |
Payments of Stock Issuance Costs | $ 0.6 |
Stock Issued During Period to Invus, Shares | 21,321,961 |
Common Stock, Shares Authorized Before Reverse Stock Split |  | 900,000,000
Common Stock, Shares Authorized After Reverse Stock Split |  | 225,000,000

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