Income Taxes Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Jan. 01, 2017	Jan. 03, 2016
Income Tax Contingency [Line Items]
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]	$ 24,018
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized Tax Benefits, Beginning Balance	19,545	$ 21,224	$ 25,715
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions	8,251	306	927
Tax positions of prior years, additions	1,704	440	476
Tax positions of prior years, reductions	(295)	(2,126)	(5,182)
Settlements, reductions	(34)	(42)	(251)
Lapse of statute of limitations, reductions	(323)	(257)	(461)
Unrecognized Tax Benefits, Ending Balance	28,848	19,545	21,224
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Estimated Range of Change, Upper Bound	6,617
Unrecognized Tax Benefits, Interest on Income Taxes Expense	161	75	(1,627)
Unrecognized Tax Benefits, Income Tax Penalties Expense	(106)	25	$ (15)
Unrecognized Tax Benefits, Interest on Income Taxes Accrued	1,451	1,296
Unrecognized Tax Benefits, Income Tax Penalties Accrued	$ 509	$ 615