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Business Combinations (Details) (USD $)
3 Months Ended
Mar. 31, 2014
Dec. 31, 2013
item
Oct. 01, 2013
Business combination      
Reversal of contingent consideration liability $ (29,368,000)    
Synos
     
Business combination      
Percentage of outstanding common shares and voting interest acquired     100.00%
Aggregate fair value of the contingent consideration arrangement   29,400,000  
Reversal of contingent consideration liability 29,400,000    
Number of contingent payments   2  
Synos | Consideration One - Customer purchase orders | First Milestone
     
Business combination      
Reversal of contingent consideration liability 20,200,000    
Synos | Consideration Two - Revenue and gross margin | Second Milestone
     
Business combination      
Reversal of contingent consideration liability 9,200,000    
Maximum potential value of contingent consideration contractually outstanding $ 75,000,000