Quarterly report pursuant to Section 13 or 15(d)

Financial Instruments (Fair Value Measurements) (Details)

v2.4.0.8
Financial Instruments (Fair Value Measurements) (Details) (Recurring, USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Assets:    
Assets, fair value $ 13,411 $ 16,086
Liabilities:    
Liabilities, fair value 16,814 25,904
Current portion of contingent liabilities-CyDex
   
Liabilities:    
Liabilities, fair value 1,094 1,712
Current portion of co-promote termination liability
   
Liabilities:    
Liabilities, fair value 688 4,329
Long-term portion of contingent liabilities-Metabasis
   
Liabilities:    
Liabilities, fair value 6,657 4,196
Long-term portion of contingent liabilities-CyDex
   
Liabilities:    
Liabilities, fair value 6,086 7,599
Liability for short-term investments owed to former licensees
   
Liabilities:    
Liabilities, fair value 1,841 651
Long-term portion of co-promote termination liability
   
Liabilities:    
Liabilities, fair value 448 7,417
Current portion of co-promote termination payments receivable
   
Assets:    
Assets, fair value 688 4,329
Available-for-sale securities
   
Assets:    
Assets, fair value 12,275 4,340
Long-term portion of co-promote termination payments receivable
   
Assets:    
Assets, fair value 448 7,417
Quoted Prices in Active Markets for Identical Assets (Level 1)
   
Assets:    
Assets, fair value 12,275 4,340
Liabilities:    
Liabilities, fair value 8,498 4,847
Quoted Prices in Active Markets for Identical Assets (Level 1) | Current portion of contingent liabilities-CyDex
   
Liabilities:    
Liabilities, fair value 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Current portion of co-promote termination liability
   
Liabilities:    
Liabilities, fair value 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Long-term portion of contingent liabilities-Metabasis
   
Liabilities:    
Liabilities, fair value 6,657 4,196
Quoted Prices in Active Markets for Identical Assets (Level 1) | Long-term portion of contingent liabilities-CyDex
   
Liabilities:    
Liabilities, fair value 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Liability for short-term investments owed to former licensees
   
Liabilities:    
Liabilities, fair value 1,841 651
Quoted Prices in Active Markets for Identical Assets (Level 1) | Long-term portion of co-promote termination liability
   
Liabilities:    
Liabilities, fair value 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Current portion of co-promote termination payments receivable
   
Assets:    
Assets, fair value 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Available-for-sale securities
   
Assets:    
Assets, fair value 12,275 4,340
Quoted Prices in Active Markets for Identical Assets (Level 1) | Long-term portion of co-promote termination payments receivable
   
Assets:    
Assets, fair value 0 0
Significant Other Observable Inputs (Level 2)
   
Assets:    
Assets, fair value 0 0
Liabilities:    
Liabilities, fair value 0 0
Significant Other Observable Inputs (Level 2) | Current portion of contingent liabilities-CyDex
   
Liabilities:    
Liabilities, fair value 0 0
Significant Other Observable Inputs (Level 2) | Current portion of co-promote termination liability
   
Liabilities:    
Liabilities, fair value 0 0
Significant Other Observable Inputs (Level 2) | Long-term portion of contingent liabilities-Metabasis
   
Liabilities:    
Liabilities, fair value 0 0
Significant Other Observable Inputs (Level 2) | Long-term portion of contingent liabilities-CyDex
   
Liabilities:    
Liabilities, fair value 0 0
Significant Other Observable Inputs (Level 2) | Liability for short-term investments owed to former licensees
   
Liabilities:    
Liabilities, fair value 0 0
Significant Other Observable Inputs (Level 2) | Long-term portion of co-promote termination liability
   
Liabilities:    
Liabilities, fair value 0 0
Significant Other Observable Inputs (Level 2) | Current portion of co-promote termination payments receivable
   
Assets:    
Assets, fair value 0 0
Significant Other Observable Inputs (Level 2) | Available-for-sale securities
   
Assets:    
Assets, fair value 0 0
Significant Other Observable Inputs (Level 2) | Long-term portion of co-promote termination payments receivable
   
Assets:    
Assets, fair value 0 0
Significant Unobservable Inputs (Level 3)
   
Assets:    
Assets, fair value 1,136 11,746
Liabilities:    
Liabilities, fair value 8,316 21,057
Significant Unobservable Inputs (Level 3) | Current portion of contingent liabilities-CyDex
   
Liabilities:    
Liabilities, fair value 1,094 1,712
Significant Unobservable Inputs (Level 3) | Current portion of co-promote termination liability
   
Liabilities:    
Liabilities, fair value 688 4,329
Significant Unobservable Inputs (Level 3) | Long-term portion of contingent liabilities-Metabasis
   
Liabilities:    
Liabilities, fair value 0 0
Significant Unobservable Inputs (Level 3) | Long-term portion of contingent liabilities-CyDex
   
Liabilities:    
Liabilities, fair value 6,086 7,599
Significant Unobservable Inputs (Level 3) | Liability for short-term investments owed to former licensees
   
Liabilities:    
Liabilities, fair value 0 0
Significant Unobservable Inputs (Level 3) | Long-term portion of co-promote termination liability
   
Liabilities:    
Liabilities, fair value 448 7,417
Significant Unobservable Inputs (Level 3) | Current portion of co-promote termination payments receivable
   
Assets:    
Assets, fair value 688 4,329
Significant Unobservable Inputs (Level 3) | Available-for-sale securities
   
Assets:    
Assets, fair value 0 0
Significant Unobservable Inputs (Level 3) | Long-term portion of co-promote termination payments receivable
   
Assets:    
Assets, fair value $ 448 $ 7,417