Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies (Details Textual)

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Commitments and Contingencies (Details Textual) (USD $)
 1 Months Ended 3 Months Ended 12 Months Ended 2 Months Ended
Nov. 30, 2011
Apr. 05, 2011
Mar. 15, 2011
Mar. 31, 2013
LegalMatter
Mar. 31, 2012
Dec. 31, 2012
Nov. 14, 2011
Mar. 31, 2013
Deerfield Warrant [Member]
Apr. 30, 2013
Deerfield Warrant [Member]
Mar. 15, 2011
Deerfield Warrant [Member]
Commitments and Contingencies (Textual) [Abstract]                    
Class of warrant or right exercised               6,000,000    
Deerfield exercise reduction of our outstanding indebtedness               $ 7,500,000    
Gain recorded in other income               1,900,000    
Commitments and Contingencies (Additional Textual) [Abstract]                    
Funding from Deerfield     20,000,000              
Proceeds from the Deerfield funding to repay Oxford in full   7,600,000                
Final payment of principal amount     480,000              
Loan principal amount     20,000,000              
Interest rate on long-term debt     8.50%              
Debt instrument periodic payment     Payable quarterly, and was originally repayable over five years              
Long term debt repayment period     5 years              
Percentage of principle amount due in year one     10.00%              
Percentage of principle amount due in year two     15.00%              
Percentage of principle amount due on each of the next three anniversaries     25.00%              
Facility fee     500,000              
Principle amount repayment percentage     110.00%              
Warrants periodic payments     6 years              
Purchase of common stock for warrants     6,000,000              
Issuance Costs     1.57           1.25 1.25
Exercise price of warrant per share after Adjustment     1.25              
Royalty revenue     3,000,000 1,424,000 1,228,000          
Debt discount     3,000,000              
Loan fee     500,000              
Fair value of warrants     5,500,000              
Total amortized discount     9,000,000              
Effective annual interest rate     33.00%              
Royalty liability     3,000,000       5,000,000      
Reduction in the principal amount owed to Deerfield             10,000,000      
Revised principal repayment in 2013             2,500,000      
Revised principal repayment in 2014             2,500,000      
Revised principal repayment in 2015             2,500,000      
Revised principal repayment in 2016             2,500,000      
Remaining long-term debt to be retired             10,000,000      
Facility agreement amount 20,000,000                  
Net sales of Fanapt       17,800,000 15,400,000          
Royalties payable       $ 2,700,000   $ 1,800,000        
Number of ongoing legal proceedings       0