Financial Instruments (Level 3 Reconciliation) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
Sep. 30, 2013
Assets:
Fair value of level 3 financial instrument assets as of December 31, 2012	$ 13,960
Assumed payments made by Pfizer or assignee	(2,450)
Fair value adjustments recorded as unrealized gain on available-for-sale securities	2,201
Fair value adjustments to co-promote termination liability	2,810
Fair value of level 3 financial instrument assets as of September 30, 2013	16,521
Liabilities
Fair value of level 3 financial instrument liabilities as of December 31, 2012	23,647
Assumed payments made by Pfizer or assignee	(2,450)
Fair value adjustments for amounts owed related to restricted investments and recorded as other expense	330
Payments to CVR and other former license holders	(100)
Fair value adjustments to contingent liabilities	(2,104)
Fair value adjustments to co-promote termination liability	2,810
Fair value of level 3 financial instrument liabilities as of September 30, 2013	$ 22,133

Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Fair Value Adjustment

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- Definition

Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Fair Value Adjustment

+ References

No definition available.

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Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Fair Value Adjustment, Contingent Liabilities

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Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Fair Value Adjustment, Co-Promotion Termination

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No definition available.

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- Definition

Amount of gain (loss) recognized in the income statement for financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ 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 (c)(1)

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- Definition

Amount of settlement of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

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- Definition

Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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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

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258

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- Definition

Amount of purchases of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ 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 (c)(2)

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Amount of settlements of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ 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 (c)(2)

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)

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