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Acquisitions (Narrative) (Details) (USD $)
In Thousands, unless otherwise specified
6 Months Ended 0 Months Ended 6 Months Ended 1 Months Ended
Jun. 30, 2014
item
Apr. 02, 2014
Medical Modeling Inc. [Member]
Jun. 30, 2014
Robtec [Member]
Apr. 16, 2014
Robtec [Member]
Jul. 31, 2014
Subsequent Event [Member]
Simbionix USA Corporation [Member]
Business Acquisition [Line Items]          
Number of businesses acquired 1        
Date of acquisition agreement     Apr. 16, 2014    
Fair value of the consideration paid   $ 69,026      
Cash paid for business acquisition   51,526     120,000
Value of shares paid for acquisition   $ 17,500      
Business acquisition, ownership percentage   100.00%   70.00% 100.00%
Number years before purchasing remaining shares     5 years