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Fair Value Measurements - Unobservable Inputs (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Amount owed to Cydex CVR holders |  | $ 2,916 | $ 3,033
CyDex |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Revenue Threshold for Revenue Sharing |  |  | 15,000
Range of annual revenue subject to revenue sharing | [1] |  | $ 22,500
Revenue volatility (percent) |  | 25.00% | 25.00%
Average of probability of commercialization (percent) |  | 12.50% | 73.00%
Sales beta (decimal) |  |  | 0.40
Credit rating (non-numeric) |  | BB | BB
Equity risk premiun (percent) |  | 6.00% | 6.00%
Market price of risk (percent) |  | 3.20% |
Amount owed to Cydex CVR holders |  | $ 5,000 |
[1] | For the December 31, 2015 valuation date, 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. For the December 31, 2016 valuation date, the Cydex CVR was determined based on the actual $5.0 million amount owed to Cydex CVR holders as the Cydex CVR agreement ended at December 31, 2016. This amount was subsequently paid in February 2017.

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- Definition Liability for contingent value rights. + References No definition available. + Details
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- Definition Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given stock price. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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- Definition Percentage above fair value that an investor seeking to acquire control of an entity will pay, used as an input to measure fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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- Definition Adjustment to the discount rate used to measure fair value for lack of ability to convert business interests into cash quickly. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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