Legal and Environmental Matters (Details) $ in Thousands	12 Months Ended
	Jan. 01, 2017 USD ($) Civil_complaints	Jul. 29, 2016 Plaintiff	Jul. 22, 2016 Defendants Plaintiff
Loss Contingency [Abstract]
Accruals for legal and environmental matters | $	$ 1,227
Number of Plaintiffs in a Civil Complaint		6	5
Number of Civil Complaints | Civil_complaints	4
Number of Subsidiaries as Defendants in a Civil Complaint | Defendants			2
Number of Plaintiffs in a Civil Complaint Financial Institutions			22