Subsequent Events (Details)	3 Months Ended	9 Months Ended	12 Months Ended
	Oct. 02, 2016 employees	Oct. 01, 2017 Rate	Dec. 31, 2017 USD ($)	Jan. 01, 2017 USD ($)	Jan. 03, 2016 USD ($)	Jul. 22, 2016 USD ($)	Jun. 30, 2015 USD ($)	May 31, 2010 USD ($)
Subsequent Event [Line Items]
Debt instrument, face value			$ 1,621,766,000	$ 1,650,094,000
Loss Contingency Accrual			43,900,000
Restructuring charges			21,045,000	207,189,000	$ 6,391,000
Repayments of Debt			6,888,000	37,932,000	$ 41,503,000
First Philec Arbitration [Member]
Subsequent Event [Line Items]
Loss Contingency Accrual						$ 50,500,000
IFC Mortgage Loan [Member]
Subsequent Event [Line Items]
Debt instrument, face value			0	$ 17,500,000				$ 75,000,000
Line of Credit [Member]
Subsequent Event [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity							$ 200,000,000.0
Letter of Credit [Member]
Subsequent Event [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity							$ 25,000,000.0
August 2016 Plan [Member]
Subsequent Event [Line Items]
Restructuring and Related Activities, Initiation Date	Aug. 09, 2016
Reorganization, number of jobs affected | employees	1,200
Restructuring charges			35,000,000
Percent of restructuring charges in cash | Rate		50.00%
August 2016 Plan [Member] | Maximum [Member]
Subsequent Event [Line Items]
Restructuring charges			$ 45,000,000