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Contingencies, Commitments and Guarantees - Contingent Consideration (Details)
12 Months Ended
Apr. 13, 2013
USD ($)
product
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Sep. 24, 2012
USD ($)
Valeant        
Loss Contingencies [Line Items]        
Discontinued operations, target royalties to be achieved for earn-out payment       $ 8,500,000.0
Discontinued operations, consideration, fair value   $ 0 $ 2,000,000  
Novartis Agreement        
Loss Contingencies [Line Items]        
Discontinued operations, consideration, fair value   0    
Visudyne        
Loss Contingencies [Line Items]        
Discontinued operations, contingent consideration proceeds   0 0  
Mati        
Loss Contingencies [Line Items]        
Proceeds from divestiture of businesses $ 1,300,000      
PPDS Technology        
Loss Contingencies [Line Items]        
Discontinued operations, contingent consideration proceeds   $ 0 $ 0  
Milestone one | Valeant        
Loss Contingencies [Line Items]        
Discontinued operations, consideration       5,000,000.0
Milestone two | Valeant        
Loss Contingencies [Line Items]        
Discontinued operations, consideration       2,500,000.0
Milestone three | Valeant        
Loss Contingencies [Line Items]        
Discontinued operations, consideration       0
Earn-out | Valeant        
Loss Contingencies [Line Items]        
Discontinued operations, consideration       15,000,000.0
Discontinued operations, annual earn-out       $ 5,000,000.0
Earn-out | Mati        
Loss Contingencies [Line Items]        
Discontinued operations, consideration $ 19,500,000.0      
Disposal Group, number of products required to be commercialized for milestone payments | product 2