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Braeburn License (Details Textual) (USD $)
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3 Months Ended | 6 Months Ended | 1 Months Ended | 6 Months Ended | |||
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Jun. 30, 2013
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Jun. 30, 2012
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Jun. 30, 2013
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Jun. 30, 2012
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Dec. 31, 2012
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Dec. 31, 2012
Collaborative Arrangement, Co-promotion [Member]
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Jun. 30, 2013
Collaborative Arrangement, Co-promotion [Member]
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| Braeburn License (Textual) [Abstract] | |||||||
| Non-refundable up-front payment | $ 15,750,000 | ||||||
| License and services revenue | 15,000,000 | ||||||
| Milestone payment | 50,000,000 | ||||||
| Additional amount received upon achievement of sales milestones | 130,000,000 | ||||||
| Additional amount in regulatory milestones | 35,000,000 | ||||||
| Potential milestone payments | 75,000,000 | ||||||
| Estimated revenue recognition period for upfront payment | 18 months | ||||||
| License revenue, recognized | 2,198,000 | 5,948,000 | 6,600,000 | ||||
| Deferred contract revenue | $ 8,427,000 | $ 8,427,000 | $ 14,375,000 | $ 8,400,000 | |||
| Maximum receipt time for milestone payment | 10 days | ||||||
| Development committee disbandment period after specified product transfer date | 6 years | ||||||