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Business Acquisition Business Acquisition (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jan. 04, 2016
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Business Acquisition [Line Items]          
Net sales   $ 190,117 $ 184,792 $ 573,837 $ 559,426
SurgiQuestInc          
Business Acquisition [Line Items]          
Business combination, consideration transferred $ 257,700        
Payments to acquire business $ 265,000        
Net sales     17,300   48,500
Pro Forma Information [Abstract]          
Net sales     184,792   559,426
Net income     9,342   21,988
Pro Forma [Member] | SurgiQuestInc          
Business Acquisition [Line Items]          
Business acquisition costs     $ 3,300   $ 17,400