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Fair Value Measurements (Acquisition of CyDex) (Details) - Cydex Pharmaceuticals, Inc - Contingent Consideration Classified as Equity	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Credit Derivatives [Line Items]
Revenue volatility (as a percent)	25.00%	25.00%
Average probability of commercialization (as a percent)	12.50%	12.50%
Market price of risk	0.03	0.03
Credit rating	BB	BB
Equity risk premium (as a percent)	6.00%	6.00%

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Average Probability of Commercialization

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Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given stock price.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
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Percentage above fair value that an investor seeking to acquire control of an entity will pay, used as an input to measure fair value.

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-Name Accounting Standards Codification
-Topic 820
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-Section 50
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