Goodwill and Other Intangible Assets, Net - Other Intangible Assets (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 28, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Gross Amount	$ 84,674	$ 84,982
Accumulated Amortization	(28,620)	(26,415)
Customer lists / relationships
Finite-Lived Intangible Assets [Line Items]
Gross Amount	57,079	57,263
Accumulated Amortization	(20,021)	(18,587)
Developed technologies
Finite-Lived Intangible Assets [Line Items]
Gross Amount	19,661	19,729
Accumulated Amortization	(4,616)	(3,998)
Trademarks / trade names
Finite-Lived Intangible Assets [Line Items]
Gross Amount	5,076	5,117
Accumulated Amortization	(1,216)	(1,055)
Non-compete agreements and other
Finite-Lived Intangible Assets [Line Items]
Gross Amount	2,335	2,350
Accumulated Amortization	$ (2,317)	(2,330)
Patents
Finite-Lived Intangible Assets [Line Items]
Amortization Period	17 years
Gross Amount	$ 523	523
Accumulated Amortization	$ (450)	$ (445)
Minimum | Customer lists / relationships
Finite-Lived Intangible Assets [Line Items]
Amortization Period	6 years
Minimum | Developed technologies
Finite-Lived Intangible Assets [Line Items]
Amortization Period	10 years
Minimum | Trademarks / trade names
Finite-Lived Intangible Assets [Line Items]
Amortization Period	15 years
Minimum | Non-compete agreements and other
Finite-Lived Intangible Assets [Line Items]
Amortization Period	1 year
Maximum | Customer lists / relationships
Finite-Lived Intangible Assets [Line Items]
Amortization Period	26 years
Maximum | Developed technologies
Finite-Lived Intangible Assets [Line Items]
Amortization Period	20 years
Maximum | Trademarks / trade names
Finite-Lived Intangible Assets [Line Items]
Amortization Period	17 years
Maximum | Non-compete agreements and other
Finite-Lived Intangible Assets [Line Items]
Amortization Period	15 years