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Fair Value Measurements (Acquisition of CyDex) (Details) - Cydex Pharmaceuticals, Inc - USD ($) $ in Millions | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2015 | Dec. 31, 2014
Credit Derivatives [Line Items] |  |
Amount Of Revenue For Contingent Consideration | $ 15.0 |
Contingent Consideration Classified as Equity |  |
Credit Derivatives [Line Items] |  |
Revenue volatility | 30.00% | 25.00%
Average of probability of commercialization | 80.00% | 81.00%
Sales beta | 0.50 | 0.60
Credit rating | B | B
Equity risk premium | 6.00% | 6.00%
Minimum | Contingent Consideration Classified as Equity |  |
Credit Derivatives [Line Items] |  |
Range of annual revenue subject to revenue sharing | $ 20.2 | $ 17.2
Maximum | Contingent Consideration Classified as Equity |  |
Credit Derivatives [Line Items] |  |
Range of annual revenue subject to revenue sharing | $ 21.8 | $ 17.3

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