Business Segment and Geographical Information - Additional Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) Segment	Jan. 02, 2016 USD ($)	Jan. 03, 2015 USD ($)
Segment Reporting [Abstract]
Number of reportable segments | Segment	2
Segment Reporting Information [Line Items]
Restructuring and other expense (income)	$ (317)	$ 515	$ 805
Operating Segments | Papermaking systems segment
Segment Reporting Information [Line Items]
Restructuring and other expense (income)	$ (300)	$ 500	$ 800