v2.4.0.6
Financial Instruments (Details) (Recurring [Member], USD $)
In Thousands, unless otherwise specified
Mar. 31, 2013
Dec. 31, 2012
Assets:    
Assets, fair value $ 14,765 $ 13,960
Liabilities:    
Liabilities, fair value 25,302 23,647
Current portion of contingent liabilities - CyDex [Member]
   
Liabilities:    
Liabilities, fair value 356 356
Current portion of co-promote termination liability [Member]
   
Liabilities:    
Liabilities, fair value 4,257 4,327
Long-term portion of contingent liabilities - CyDex [Member]
   
Liabilities:    
Liabilities, fair value 12,384 10,543
Liability for restricted investments owed to former licensees [Member]
   
Liabilities:    
Liabilities, fair value 389 214
Long-term portion of co-promote termination liability [Member]
   
Liabilities:    
Liabilities, fair value 7,916 8,207
Current portion of co-promote termination payments receivable [Member]
   
Assets:    
Assets, fair value 4,257 4,327
Available-for-sale securities [Member]
   
Assets:    
Assets, fair value 2,592 1,426
Long-term portion of co-promote termination payments receivable [Member]
   
Assets:    
Assets, fair value 7,916 8,207
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
   
Assets:    
Assets, fair value      
Liabilities:    
Liabilities, fair value      
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Current portion of contingent liabilities - CyDex [Member]
   
Liabilities:    
Liabilities, fair value      
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Current portion of co-promote termination liability [Member]
   
Liabilities:    
Liabilities, fair value      
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Long-term portion of contingent liabilities - CyDex [Member]
   
Liabilities:    
Liabilities, fair value      
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Liability for restricted investments owed to former licensees [Member]
   
Liabilities:    
Liabilities, fair value      
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Long-term portion of co-promote termination liability [Member]
   
Liabilities:    
Liabilities, fair value      
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Current portion of co-promote termination payments receivable [Member]
   
Assets:    
Assets, fair value      
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Available-for-sale securities [Member]
   
Assets:    
Assets, fair value      
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Long-term portion of co-promote termination payments receivable [Member]
   
Assets:    
Assets, fair value      
Significant Other Observable Inputs (Level 2) [Member]
   
Assets:    
Assets, fair value      
Liabilities:    
Liabilities, fair value      
Significant Other Observable Inputs (Level 2) [Member] | Current portion of contingent liabilities - CyDex [Member]
   
Liabilities:    
Liabilities, fair value      
Significant Other Observable Inputs (Level 2) [Member] | Current portion of co-promote termination liability [Member]
   
Liabilities:    
Liabilities, fair value      
Significant Other Observable Inputs (Level 2) [Member] | Long-term portion of contingent liabilities - CyDex [Member]
   
Liabilities:    
Liabilities, fair value      
Significant Other Observable Inputs (Level 2) [Member] | Liability for restricted investments owed to former licensees [Member]
   
Liabilities:    
Liabilities, fair value      
Significant Other Observable Inputs (Level 2) [Member] | Long-term portion of co-promote termination liability [Member]
   
Liabilities:    
Liabilities, fair value      
Significant Other Observable Inputs (Level 2) [Member] | Current portion of co-promote termination payments receivable [Member]
   
Assets:    
Assets, fair value      
Significant Other Observable Inputs (Level 2) [Member] | Available-for-sale securities [Member]
   
Assets:    
Assets, fair value      
Significant Other Observable Inputs (Level 2) [Member] | Long-term portion of co-promote termination payments receivable [Member]
   
Assets:    
Assets, fair value      
Significant Unobservable Inputs (Level 3) [Member]
   
Assets:    
Assets, fair value 14,765 13,960
Liabilities:    
Liabilities, fair value 25,302 23,647
Significant Unobservable Inputs (Level 3) [Member] | Current portion of contingent liabilities - CyDex [Member]
   
Liabilities:    
Liabilities, fair value 356 356
Significant Unobservable Inputs (Level 3) [Member] | Current portion of co-promote termination liability [Member]
   
Liabilities:    
Liabilities, fair value 4,257 4,327
Significant Unobservable Inputs (Level 3) [Member] | Long-term portion of contingent liabilities - CyDex [Member]
   
Liabilities:    
Liabilities, fair value 12,384 10,543
Significant Unobservable Inputs (Level 3) [Member] | Liability for restricted investments owed to former licensees [Member]
   
Liabilities:    
Liabilities, fair value 389 214
Significant Unobservable Inputs (Level 3) [Member] | Long-term portion of co-promote termination liability [Member]
   
Liabilities:    
Liabilities, fair value 7,916 8,207
Significant Unobservable Inputs (Level 3) [Member] | Current portion of co-promote termination payments receivable [Member]
   
Assets:    
Assets, fair value 4,257 4,327
Significant Unobservable Inputs (Level 3) [Member] | Available-for-sale securities [Member]
   
Assets:    
Assets, fair value 2,592 1,426
Significant Unobservable Inputs (Level 3) [Member] | Long-term portion of co-promote termination payments receivable [Member]
   
Assets:    
Assets, fair value $ 7,916 $ 8,207