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Summary of Significant Accounting Policies (Details 3) (USD $)
In Millions, unless otherwise specified
 12 Months Ended 3 Months Ended 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Mar. 31, 2010
Xclair Cream
Dec. 31, 2011
Numoisyn Liquid
Dec. 31, 2011
Numoisyn Lozenges
Product sales          
Percentage of current wholesale acquisition price to be deducted from gross invoice sales price to record deferred revenue 5.00%        
Product returns   $ 0.2      
Revenue Recognition          
Initial shelf life     2 years    
Product shelf lives     3 years 3 years 5 years