Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Details)

v2.4.0.8
Summary of Significant Accounting Policies (Details) (USD $)
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Segment
Jun. 30, 2012
Dec. 31, 2012
Summary of Significant Accounting Policies (Textual) [Abstract]          
Interest-bearing instruments with original maturities date of purchase, Maximum     90 days    
Interest-bearing instruments with remaining maturities date of purchase, Maximum     90 days    
Goodwill $ 364,900,000   $ 364,900,000    
Intangible assets other than goodwill acquired in business combinations, licensing and other transactions         176,200,000
Short-term investments maturities period Minimum     90 days    
Short-term investments maturities period Maximum     1 year    
Long-term investments maturities period Minimum     1 year    
Revenue related to our consulting agreement with Neovasc 200,000 100,000 400,000 200,000  
License revenue from transfer of intellectual property     14,800,000    
Revenue related to our license agreements 5,203,000 294,000 21,052,000 432,000  
Total deferred revenue related to other revenues 6,000,000   6,000,000   1,900,000
Allowance for Doubtful Accounts Receivable 900,000   900,000   500,000
Equity-based compensation expense for continuing operations 1,800,000 1,000,000 7,000,000 2,200,000  
Number of reportable segments     2    
RXi Pharmaceuticals Corporation [Member]
         
Summary of Significant Accounting Policies (Textual) [Abstract]          
Revenue related to our license agreements     12,500,000    
Pharmaceutical [Member]
         
Summary of Significant Accounting Policies (Textual) [Abstract]          
Revenue related to our license agreements 1,300,000 0 13,800,000 0  
Number of operating segments     2    
Diagnostics [Member]
         
Summary of Significant Accounting Policies (Textual) [Abstract]          
Revenue related to our license agreements $ 3,823,000 $ 243,000 $ 7,132,000 $ 330,000  
Number of operating segments     2