Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Details Textual)

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Fair Value Measurements (Details Textual) (USD $)
In Millions, unless otherwise specified
6 Months Ended
Jun. 30, 2013
Dec. 31, 2012
Cash and Cash Equivalents [Line Items]    
Accrued expenses $ 5.3  
Other long term liabilities 63.6  
Fair Value Measurement (Textual) [Abstract]    
Increase in discount rates related to consideration 1.00%  
Change in contingent consideration on discount rates increase 1.3  
Decrease of estimated future sales in amount 0.5  
Decrease of estimated future sales 10.00%  
Contingent consideration 68.9 20.0
Maximum [Member]
   
Cash and Cash Equivalents [Line Items]    
Discount rates related to consideration 27.00%  
Minimum [Member]
   
Cash and Cash Equivalents [Line Items]    
Discount rates related to consideration 6.00%  
US Treasury Securities [Member]
   
Cash and Cash Equivalents [Line Items]    
Accrued expenses 5.3 5.1
Other long term liabilities 63.6 14.9
September 5, 2013 [Member]
   
Cash and Cash Equivalents [Line Items]    
US Government Securities, at Carrying Value 25.0  
September 30, 2015 [Member]
   
Cash and Cash Equivalents [Line Items]    
US Government Securities, at Carrying Value 25.0  
October 15, 2013 [Member]
   
Cash and Cash Equivalents [Line Items]    
US Government Securities, at Carrying Value $ 25.0