Fair Value Measurements (Balance Sheet Grouping) (Details) - USD ($) $ in Thousands	Jul. 02, 2016	Jan. 02, 2016	Jul. 04, 2015	Jan. 03, 2015
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	$ 37,725	$ 39,105	$ 42,619	$ 35,373
Restricted cash	714	966
Total assets	38,439	40,071
Interest rate swaps	3,701	1,045
Total liabilities	3,701	1,045
Debt outstanding, fair value	1,403,000	391,000
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	37,725	39,105
Restricted cash	714	966
Total assets	38,439	40,071
Interest rate swaps	0	0
Total liabilities	0	0
Significant Other Observable Inputs (Level 2)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	0	0
Restricted cash	0	0
Total assets	0	0
Interest rate swaps	3,701	1,045
Total liabilities	3,701	1,045
Significant Unobservable Inputs (Level 3)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	0	0
Restricted cash	0	0
Total assets	0	0
Interest rate swaps	0	0
Total liabilities	$ 0	$ 0