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Discontinued Operations, Assets Held for Sale (Details) - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Commercial Business Segment [Member]        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Disposal Group, Including Discontinued Operation, General and Administrative Expense $ 2,233,000 $ 4,581,000 $ 4,614,000 $ 8,921,000
Success fee contingently due to third party $ 900,000   $ 900,000  
Disposal Group, Including Discontinued Operation, Contingent Liability From Divestiture Agreement, Percent of Realized Future Revenue 5.00%   5.00%  
Retention fees contingently due $ 352,000   $ 352,000  
Retention fees contingently due (as percentage of consideration received) 3.00%   3.00%  
Abstral and Zuplenz [Member]        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Disposal Group, Including Discontinued Operation, Revenue Milestone, Potential Future Milestone Payments $ 30,000,000   $ 30,000,000  
Legal Expenses [Member] | Commercial Business Segment [Member]        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Disposal Group, Including Discontinued Operation, General and Administrative Expense $ 2,200,000   $ 4,400,000