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Fair Value Measurements (Level 3 Reconciliation) (Details) - USD ($) $ in Thousands | 6 Months Ended
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Jun. 30, 2016 | Jun. 30, 2015
Assets: |  |
Fair value of level 3 financial instrument assets as of December 31, 2015 | $ 4,782 |
Viking note receivable fair market value adjustment | (215) |
Cash payment received as partial repayment of note receivable | (300) | $ 0
Fair market value of stock received as partial repayment of note receivable | (1,060) |
Fair value of level 3 financial instrument assets as of June 30, 2016 | 3,207 |
Liabilities: |  |
Fair value of level 3 financial instrument liabilities as of December 31, 2015 | 9,490 |
Payments to CVR and other former license holders | (2,992) |
Fair value adjustments to contingent liabilities | 473 |
Fair value of level 3 financial instrument liabilities as of June 30, 2016 | $ 6,971 |

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- Definition Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Fair Value Adjustment, Contingent Liabilities + References No definition available. + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Amount of transfers of financial instrument classified as an asset out of level 3 of the fair value hierarchy. + 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)(3) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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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. + 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) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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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) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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