Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets - Summary of Acquired Intangible Assets (Details)

v3.19.3
Intangible Assets - Summary of Acquired Intangible Assets (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 28, 2019
Dec. 31, 2018
Finite-Lived Intangible Assets    
WeightedAverage Life 13 years  
Gross Carrying Amount $ 209,482 $ 197,800
Accumulated Amortization $ 77,049 64,417
Held for Sale | Test Systems Segment    
Finite-Lived Intangible Assets    
Intangible Assets, Net of Accumulated Amortization   651
Patents    
Finite-Lived Intangible Assets    
WeightedAverage Life 11 years  
Gross Carrying Amount $ 2,146 2,146
Accumulated Amortization $ 1,782 1,716
Non-compete Agreement    
Finite-Lived Intangible Assets    
WeightedAverage Life 4 years  
Gross Carrying Amount $ 10,900 10,900
Accumulated Amortization $ 6,925 4,680
Trade Names    
Finite-Lived Intangible Assets    
WeightedAverage Life 10 years  
Gross Carrying Amount $ 11,419 11,454
Accumulated Amortization $ 5,983 5,182
Completed and Unpatented Technology    
Finite-Lived Intangible Assets    
WeightedAverage Life 10 years  
Gross Carrying Amount $ 42,904 36,406
Accumulated Amortization $ 17,782 14,964
Customer Relationships    
Finite-Lived Intangible Assets    
WeightedAverage Life 15 years  
Gross Carrying Amount $ 142,113 136,894
Accumulated Amortization $ 44,577 $ 37,875