Fair Value Measurements (Details) (USD $)
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Sep. 30, 2014
2019 convertible senior notes
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Dec. 31, 2013
2019 convertible senior notes
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Aug. 31, 2014
2019 convertible senior notes
Senior Notes
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Sep. 30, 2014
Recurring
|
Dec. 31, 2013
Recurring
|
Sep. 30, 2014
Recurring
Current contingent liabilities-CyDex
|
Dec. 31, 2013
Recurring
Current contingent liabilities-CyDex
|
Sep. 30, 2014
Recurring
Current co-promote termination liability
|
Dec. 31, 2013
Recurring
Current co-promote termination liability
|
Sep. 30, 2014
Recurring
Long-term contingent liabilities-Metabasis
|
Dec. 31, 2013
Recurring
Long-term contingent liabilities-Metabasis
|
Sep. 30, 2014
Recurring
Long-term contingent liabilities-CyDex
|
Dec. 31, 2013
Recurring
Long-term contingent liabilities-CyDex
|
Sep. 30, 2014
Recurring
Liability for short-term investments owed to former licensees
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Dec. 31, 2013
Recurring
Liability for short-term investments owed to former licensees
|
Dec. 31, 2013
Recurring
Long-term portion of co-promote termination liability
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Sep. 30, 2014
Recurring
Current co-promote termination payments receivable
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Dec. 31, 2013
Recurring
Current co-promote termination payments receivable
|
Sep. 30, 2014
Recurring
Available-for-sale securities
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Dec. 31, 2013
Recurring
Available-for-sale securities
|
Dec. 31, 2013
Recurring
Long-term portion of co-promote termination payments receivable
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Sep. 30, 2014
Recurring
Quoted Prices in Active Markets for Identical Assets (Level 1)
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Dec. 31, 2013
Recurring
Quoted Prices in Active Markets for Identical Assets (Level 1)
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Sep. 30, 2014
Recurring
Quoted Prices in Active Markets for Identical Assets (Level 1)
Current contingent liabilities-CyDex
|
Dec. 31, 2013
Recurring
Quoted Prices in Active Markets for Identical Assets (Level 1)
Current contingent liabilities-CyDex
|
Sep. 30, 2014
Recurring
Quoted Prices in Active Markets for Identical Assets (Level 1)
Current co-promote termination liability
|
Dec. 31, 2013
Recurring
Quoted Prices in Active Markets for Identical Assets (Level 1)
Current co-promote termination liability
|
Sep. 30, 2014
Recurring
Quoted Prices in Active Markets for Identical Assets (Level 1)
Long-term contingent liabilities-Metabasis
|
Dec. 31, 2013
Recurring
Quoted Prices in Active Markets for Identical Assets (Level 1)
Long-term contingent liabilities-Metabasis
|
Sep. 30, 2014
Recurring
Quoted Prices in Active Markets for Identical Assets (Level 1)
Long-term contingent liabilities-CyDex
|
Dec. 31, 2013
Recurring
Quoted Prices in Active Markets for Identical Assets (Level 1)
Long-term contingent liabilities-CyDex
|
Sep. 30, 2014
Recurring
Quoted Prices in Active Markets for Identical Assets (Level 1)
Liability for short-term investments owed to former licensees
|
Dec. 31, 2013
Recurring
Quoted Prices in Active Markets for Identical Assets (Level 1)
Liability for short-term investments owed to former licensees
|
Dec. 31, 2013
Recurring
Quoted Prices in Active Markets for Identical Assets (Level 1)
Long-term portion of co-promote termination liability
|
Sep. 30, 2014
Recurring
Quoted Prices in Active Markets for Identical Assets (Level 1)
Current co-promote termination payments receivable
|
Dec. 31, 2013
Recurring
Quoted Prices in Active Markets for Identical Assets (Level 1)
Current co-promote termination payments receivable
|
Sep. 30, 2014
Recurring
Quoted Prices in Active Markets for Identical Assets (Level 1)
Available-for-sale securities
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Dec. 31, 2013
Recurring
Quoted Prices in Active Markets for Identical Assets (Level 1)
Available-for-sale securities
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Dec. 31, 2013
Recurring
Quoted Prices in Active Markets for Identical Assets (Level 1)
Long-term portion of co-promote termination payments receivable
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Sep. 30, 2014
Recurring
Significant Other Observable Inputs (Level 2)
|
Dec. 31, 2013
Recurring
Significant Other Observable Inputs (Level 2)
|
Sep. 30, 2014
Recurring
Significant Other Observable Inputs (Level 2)
Current contingent liabilities-CyDex
|
Dec. 31, 2013
Recurring
Significant Other Observable Inputs (Level 2)
Current contingent liabilities-CyDex
|
Sep. 30, 2014
Recurring
Significant Other Observable Inputs (Level 2)
Current co-promote termination liability
|
Dec. 31, 2013
Recurring
Significant Other Observable Inputs (Level 2)
Current co-promote termination liability
|
Sep. 30, 2014
Recurring
Significant Other Observable Inputs (Level 2)
Long-term contingent liabilities-Metabasis
|
Dec. 31, 2013
Recurring
Significant Other Observable Inputs (Level 2)
Long-term contingent liabilities-Metabasis
|
Sep. 30, 2014
Recurring
Significant Other Observable Inputs (Level 2)
Long-term contingent liabilities-CyDex
|
Dec. 31, 2013
Recurring
Significant Other Observable Inputs (Level 2)
Long-term contingent liabilities-CyDex
|
Sep. 30, 2014
Recurring
Significant Other Observable Inputs (Level 2)
Liability for short-term investments owed to former licensees
|
Dec. 31, 2013
Recurring
Significant Other Observable Inputs (Level 2)
Liability for short-term investments owed to former licensees
|
Dec. 31, 2013
Recurring
Significant Other Observable Inputs (Level 2)
Long-term portion of co-promote termination liability
|
Sep. 30, 2014
Recurring
Significant Other Observable Inputs (Level 2)
Current co-promote termination payments receivable
|
Dec. 31, 2013
Recurring
Significant Other Observable Inputs (Level 2)
Current co-promote termination payments receivable
|
Sep. 30, 2014
Recurring
Significant Other Observable Inputs (Level 2)
Available-for-sale securities
|
Dec. 31, 2013
Recurring
Significant Other Observable Inputs (Level 2)
Available-for-sale securities
|
Dec. 31, 2013
Recurring
Significant Other Observable Inputs (Level 2)
Long-term portion of co-promote termination payments receivable
|
Sep. 30, 2014
Recurring
Significant Unobservable Inputs (Level 3)
|
Dec. 31, 2013
Recurring
Significant Unobservable Inputs (Level 3)
|
Sep. 30, 2014
Recurring
Significant Unobservable Inputs (Level 3)
Current contingent liabilities-CyDex
|
Dec. 31, 2013
Recurring
Significant Unobservable Inputs (Level 3)
Current contingent liabilities-CyDex
|
Sep. 30, 2014
Recurring
Significant Unobservable Inputs (Level 3)
Current co-promote termination liability
|
Dec. 31, 2013
Recurring
Significant Unobservable Inputs (Level 3)
Current co-promote termination liability
|
Sep. 30, 2014
Recurring
Significant Unobservable Inputs (Level 3)
Long-term contingent liabilities-Metabasis
|
Dec. 31, 2013
Recurring
Significant Unobservable Inputs (Level 3)
Long-term contingent liabilities-Metabasis
|
Sep. 30, 2014
Recurring
Significant Unobservable Inputs (Level 3)
Long-term contingent liabilities-CyDex
|
Dec. 31, 2013
Recurring
Significant Unobservable Inputs (Level 3)
Long-term contingent liabilities-CyDex
|
Sep. 30, 2014
Recurring
Significant Unobservable Inputs (Level 3)
Liability for short-term investments owed to former licensees
|
Dec. 31, 2013
Recurring
Significant Unobservable Inputs (Level 3)
Liability for short-term investments owed to former licensees
|
Dec. 31, 2013
Recurring
Significant Unobservable Inputs (Level 3)
Long-term portion of co-promote termination liability
|
Sep. 30, 2014
Recurring
Significant Unobservable Inputs (Level 3)
Current co-promote termination payments receivable
|
Dec. 31, 2013
Recurring
Significant Unobservable Inputs (Level 3)
Current co-promote termination payments receivable
|
Sep. 30, 2014
Recurring
Significant Unobservable Inputs (Level 3)
Available-for-sale securities
|
Dec. 31, 2013
Recurring
Significant Unobservable Inputs (Level 3)
Available-for-sale securities
|
Dec. 31, 2013
Recurring
Significant Unobservable Inputs (Level 3)
Long-term portion of co-promote termination payments receivable
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Assets: | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Assets, fair value | $ 6,448,000 | $ 16,086,000 | $ 523,000 | $ 4,329,000 | $ 5,925,000 | $ 4,340,000 | $ 7,417,000 | $ 5,925,000 | $ 4,340,000 | $ 0 | $ 0 | $ 5,925,000 | $ 4,340,000 | $ 0 | $ 0 | $ 0 | $ 0 | $ 0 | $ 0 | $ 0 | $ 0 | $ 523,000 | $ 11,746,000 | $ 523,000 | $ 4,329,000 | $ 0 | $ 0 | $ 7,417,000 | |||||||||||||||||||||||||||||||||||||||||||||||
Liabilities: | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Liabilities, fair value | 17,890,000 | 25,904,000 | 4,184,000 | 1,712,000 | 523,000 | 4,329,000 | 3,511,000 | 4,196,000 | 8,755,000 | 7,599,000 | 917,000 | 651,000 | 7,417,000 | 4,428,000 | 4,847,000 | 0 | 0 | 0 | 0 | 3,511,000 | 4,196,000 | 0 | 0 | 917,000 | 651,000 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 13,462,000 | 21,057,000 | 4,184,000 | 1,712,000 | 523,000 | 4,329,000 | 0 | 0 | 8,755,000 | 7,599,000 | 0 | 0 | 7,417,000 | |||||||||||||||||||||||
Principal amount outstanding | 245,000,000 | 0 | 245,000,000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Estimated fair value of debt | $ 229,800,000 |