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Business Combinations unaudited pro forma (Details ) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Business Combinations [Abstract]    
Revenues $ 968,179 $ 854,673
Net income attributable to NuVasive, Inc. $ 38,045 $ 11,675
Net income per share attributable to NuVasive, Inc.:    
Basic $ 0.76 $ 0.24
Diluted $ 0.70 $ 0.22