Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands		6 Months Ended
	Apr. 10, 2015	Jun. 28, 2015	Jun. 29, 2014
Supplemental Cash Flow Information [Abstract]
Interest		$ 724	$ 1,026
Income tax payments		3,575	4,014
Capital expenditures accrued		900	600
Dividend paid	$ 21,000	$ 20,980	$ 0
Dividend payable, non-cash liability	$ 400