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Intangible Assets Intangible Assets - Schedule of Finite-Lived Intangible Assets (Details) - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2017
Oct. 01, 2016
Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]      
Amortization of Intangible Assets $ 3,700 $ 2,800  
Total intangible assets 51,741   $ 50,689
Accumulated amortization (24,252)   (21,313)
Intangible assets, net 27,489   29,376
Patents      
Finite-Lived Intangible Assets [Line Items]      
Total intangible assets 20,715   19,950
Customer relationships      
Finite-Lived Intangible Assets [Line Items]      
Total intangible assets 7,669   7,669
Customer relationships      
Finite-Lived Intangible Assets [Line Items]      
Total intangible assets 7,500   7,500
Acquired technology      
Finite-Lived Intangible Assets [Line Items]      
Total intangible assets 5,580   5,580
Trademarks      
Finite-Lived Intangible Assets [Line Items]      
Total intangible assets 3,990   3,777
Capitalized software development costs      
Finite-Lived Intangible Assets [Line Items]      
Total intangible assets 2,606   2,539
Other      
Finite-Lived Intangible Assets [Line Items]      
Total intangible assets $ 3,681   $ 3,674