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Financial Instruments (Aquisition of CyDex) (Details) (Cydex Pharmaceuticals, Inc, USD $) In Millions, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2013 Contingent Consideration Classified as Equity | Dec. 31, 2013 Minimum Contingent Consideration Classified as Equity | Dec. 31, 2013 Maximum Contingent Consideration Classified as Equity | Dec. 31, 2014 Scenario, Forecast Contingent Consideration Classified as Equity | Dec. 31, 2014 Scenario, Forecast Minimum Contingent Consideration Classified as Equity | Dec. 31, 2014 Scenario, Forecast Maximum Contingent Consideration Classified as Equity
Credit Derivatives [Line Items] |  |  |  |  |  |  |  |  |  |  |
Range of annual revenue subject to revenue sharing |  |  | $ 4.2 | [1] | $ 19.8 | [1] |  | $ 5.1 | [1] | $ 17.9 | [1]
Revenue volatility |  | 25.00% |  |  |  |  | 25.00% |  |  |  |
Average of probability of commercialization |  | 67.60% |  |  |  |  | 67.40% |  |  |  |
Sales beta |  | 0.60 |  |  |  |  | 0.60 |  |  |  |
Credit rating |  | BBB |  |  |  |  | BBB |  |  |  |
Equity risk premium |  | 6.00% |  |  |  |  | 6.00% |  |  |  |
Amount Of Revenue For Contingent Consideration | $ 15 |  |  |  |  |  |  |  |  |  |
[1] | Revenue subject to revenue sharing represent management’s estimate of the range of total annual revenue subject to revenue sharing (i.e. annual revenues in excess of $15 million) through December 31, 2016, which is the term of the CVR agreement.

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