Business Segments Revenue from External Customers and Long-Lived Assets (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 03, 2015	Dec. 28, 2013	Dec. 29, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 1,186,973	$ 1,169,598	$ 1,142,521
Long-Lived Assets	93,900	100,945
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	965,739	950,977	904,791
Long-Lived Assets	64,451	66,922
Canada
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	221,234	218,621	237,730
Long-Lived Assets	$ 29,449	$ 34,023