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Avinza Co-Promotion (Co-Promote Termination Liability) (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2014
Summary of co-promote termination liability  
Net present value of payments based on estimated future net Avinza product sales $ 11,746
Assumed payments made by Pfizer or assignee (276)
Fair value adjustments (10,334)
Total co-promote termination liability 1,136
Less: current portion of co-promote termination liability 688
Long-term portion of co-promote termination liability $ 448