Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation (Details Textual)

v2.4.0.6
Basis of Presentation (Details Textual) (USD $)
3 Months Ended 9 Months Ended 9 Months Ended 12 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Dec. 31, 2011
Sep. 30, 2012
Accounts Receivable [Member]
Customer Concentration Risk [Member]
customer
Dec. 31, 2011
Accounts Receivable [Member]
Customer Concentration Risk [Member]
customer
Sep. 30, 2012
Equipment [Member]
Sep. 30, 2012
Equipment [Member]
Minimum [Member]
Sep. 30, 2012
Equipment [Member]
Maximum [Member]
Dec. 31, 2011
IPR&D MEDI-528 [Member]
Dec. 31, 2011
IPR&D TRPV1 [Member]
Basis of Presentation (Textual) [Abstract]                        
Accumulated deficit $ (683,822,000)   $ (683,822,000)   $ (682,232,000)              
Working capital (12,400,000)   (12,400,000)                  
Period for which available resources are sufficient to satisfy company's anticipated operating and capital requirements     12 months                  
Common shares included in computation 0 0 0 37,406                
Common shares excluded from computation     2,000,000 1,600,000                
Period allowed for return of products, minimum     30 days                  
Period allowed for return of products, maximum     90 days                  
Maturity period of cash and cash equivalents     three months or less                  
Maturity period of cash and cash equivalents, maximum     3 months                  
Maturity period of short term investments     more than three months                  
Maturity period of short term investments, minimum     3 months                  
FDIC insured amount 250,000,000   250,000,000                  
Cash deposits 6,800,000   6,800,000   13,100,000              
Concentration risk, number of customers           1 2          
Concentration risk, percentage of accounts receivable           60.00% 67.00%          
Accounts receivable outstanding considered past due after period, minimum     30 days                  
Accounts receivable outstanding considered past due after period, maximum     90 days                  
Allowance for doubtful accounts 0   0   0              
Estimated useful life of assets               three to ten years P3Y P10Y    
Amortization expense     1,700,000 1,900,000                
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]                        
Amortization Expense 2012 2,300,000   2,300,000                  
Amortization Expense 2013 2,300,000   2,300,000                  
Amortization Expense 2014 2,300,000   2,300,000                  
Amortization Expense 2015 2,300,000   2,300,000                  
Amortization Expense 2016 2,300,000   2,300,000                  
Impairment of IPR&D                     1,100,000 1,200,000
Deferred revenue 900,000   900,000   1,200,000              
Amount included in current portion of deferred revenue 400,000   400,000                  
Amount included in long-term portion of deferred revenue $ 500,000   $ 500,000