Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets - Summary of Acquired Intangible Assets (Detail)

v3.5.0.2
Intangible Assets - Summary of Acquired Intangible Assets (Detail) - USD ($)
$ in Thousands
 9 Months Ended
Oct. 01, 2016
Dec. 31, 2015
Finite-Lived Intangible Assets    
Weighted average life (less than for backlogs) 6 years  
Gross carrying amount $ 147,578 $ 146,593
Accumulated amortization $ 46,541 38,317
Patents    
Finite-Lived Intangible Assets    
Weighted average life (less than for backlogs) 5 years  
Gross carrying amount $ 2,146 2,146
Accumulated amortization $ 1,404 1,264
Non-compete Agreement    
Finite-Lived Intangible Assets    
Weighted average life (less than for backlogs) 4 years  
Gross carrying amount $ 2,500 2,500
Accumulated amortization $ 854 479
Trade Names    
Finite-Lived Intangible Assets    
Weighted average life (less than for backlogs) 7 years  
Gross carrying amount $ 10,240 10,217
Accumulated amortization $ 2,919 2,216
Completed and Unpatented Technology    
Finite-Lived Intangible Assets    
Weighted average life (less than for backlogs) 6 years  
Gross carrying amount $ 24,213 24,056
Accumulated amortization $ 8,612 6,795
Backlog    
Finite-Lived Intangible Assets    
Weighted average life (less than for backlogs) 1 year  
Gross carrying amount $ 11,226 11,202
Accumulated amortization $ 11,202 10,793
Customer Relationships    
Finite-Lived Intangible Assets    
Weighted average life (less than for backlogs) 12 years  
Gross carrying amount $ 97,253 96,472
Accumulated amortization $ 21,550 $ 16,770