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Asset Purchase Agreements (Details Textual) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2015
Mar. 27, 2015
Nov. 18, 2014
Payments to Acquire Other Productive Assets $ 0.5    
Milestone Payment 6.0    
Business Combination, Contingent Consideration, Liability 3.0    
AstraZeneca [Member]      
Payments to Acquire Productive Assets 6.9    
Valeant [Member]      
Payments to Acquire Other Productive Assets 1.5    
Payments to Acquire Productive Assets 3.5    
Valeant [Member] | Option exercised for Each of Two Additional Products [Member]      
Business Combination, Contingent Consideration, Liability 0.8 $ 1.5  
Valeant [Member] | Option exercised for One Additional Products [Member]      
Business Combination, Contingent Consideration, Liability 0.5   $ 0.5
Valeant [Member] | Option exercised for Total Aggregate Additional Products [Member]      
Business Combination, Contingent Consideration, Liability $ 2.0