Segment Information (Additional Information) (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2018	Apr. 02, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]
Adjusted EBITDA	$ 61,414	$ 52,594
Accounting Standards Update 2017-07
Revenues from External Customers and Long-Lived Assets [Line Items]
Adjusted EBITDA		(300)
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Adjusted EBITDA	9,930	7,738
Europe | Accounting Standards Update 2017-07
Revenues from External Customers and Long-Lived Assets [Line Items]
Adjusted EBITDA		(100)
Corporate & Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Adjusted EBITDA	$ (6,574)	(5,295)
Corporate & Other | Accounting Standards Update 2017-07
Revenues from External Customers and Long-Lived Assets [Line Items]
Adjusted EBITDA		$ (300)