Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2017	Oct. 02, 2016	Oct. 01, 2017	Oct. 02, 2016	Jan. 01, 2017
Provision for income taxes	$ (17,298)	$ (28,965)	$ (28,639)	$ (50,385)
Effective Income Tax Rate	54.80%	37.20%	45.20%	33.30%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	35.00%	35.00%	35.00%	35.00%
Quantifying Misstatement in Current Year Financial Statements, Amount			$ 2,248	$ 7,113
Effective Income Tax Rate Reconciliation, Share based Compensation, Excess Tax Benefit, Amount			5,205
Decrease in Unrecognized Tax Benefits is Reasonably Possible	$ 7,030		7,030
Accounts and notes receivable, net
Income Taxes Receivable	16,165		16,165		$ 18,111
Other Assets
Income Taxes Receivable	960		$ 960		$ 239
System Optimization
Provision for income taxes	$ (5,019)	$ (2,332)