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Business Combination - Additional Information (Detail) - MeVis Medical Solutions AG (MeVis)
$ in Millions
Apr. 21, 2015
USD ($)
Apr. 21, 2015
€ / shares
Apr. 03, 2015
USD ($)
Business Acquisition [Line Items]      
Voluntary tender offer, share price | € / shares   € 17.50  
Percent of outstanding shares acquired   73.50%  
Payments to acquire businesses, gross $ 25.5    
Other Assets      
Business Acquisition [Line Items]      
Restricted cash to fund the tender offer     $ 34.7