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Goodwill - Schedule of Changes in Net Carrying Amount of Goodwill (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Jun. 30, 2013
Sep. 30, 2013
Dec. 31, 2012
Goodwill [Line Items]          
Beginning balance $ 72,758   $ 74,388 $ 74,388 $ 73,094
Reallocation           
Impairment (19,193)      (19,193)  
Foreign currency 1,840   (1,630)   1,294
Ending balance 55,405   72,758 55,405 74,388
Spine [Member]
         
Goodwill [Line Items]          
Beginning balance 41,401   41,564 41,564 41,419
Reallocation (41,401)        
Impairment           
Foreign currency      (163)   145
Ending balance      41,401    41,564
Orthopedics [Member]
         
Goodwill [Line Items]          
Beginning balance 31,357   32,824 32,824 31,675
Reallocation (31,357)        
Impairment           
Foreign currency      (1,467)   1,149
Ending balance      31,357    32,824
BioStim [Member]
         
Goodwill [Line Items]          
Beginning balance              
Reallocation 42,678        
Impairment           
Foreign currency 1,472          
Ending balance 44,150      44,150   
Biologics [Member]
         
Goodwill [Line Items]          
Beginning balance              
Reallocation 10,887        
Impairment           
Foreign currency 368          
Ending balance 11,255      11,255   
Spine Fixation [Member]
         
Goodwill [Line Items]          
Beginning balance              
Reallocation 9,368        
Impairment (9,368)        
Foreign currency             
Ending balance              
Extremity Fixation [Member]
         
Goodwill [Line Items]          
Beginning balance              
Reallocation 9,825        
Impairment (9,825)        
Foreign currency             
Ending balance