Goodwill And Other Intangible Assets (Schedule Of Components Of Goodwill) (Details) - USD ($) $ in Thousands	Jun. 28, 2015	Dec. 28, 2014	Dec. 29, 2013
Goodwill [Line Items]
Gross Amount	$ 376,607	$ 400,837
Accumulated Impairment Losses	210,524	227,268
Goodwill, Net	166,083	173,569	$ 185,864
Merchandise Availability Solutions
Goodwill [Line Items]
Gross Amount	178,377	192,303
Accumulated Impairment Losses	34,434	42,657
Goodwill, Net	143,943	149,646	159,157
Apparel Labeling Solutions
Goodwill [Line Items]
Gross Amount	83,720	84,407
Accumulated Impairment Losses	81,604	82,291
Goodwill, Net	2,116	2,116	2,116
Retail Merchandising Solutions
Goodwill [Line Items]
Gross Amount	114,510	124,127
Accumulated Impairment Losses	94,486	102,320
Goodwill, Net	$ 20,024	$ 21,807	$ 24,591