Goodwill And Other Intangible Assets (Schedule Of Components Of Goodwill) (Details) - USD ($) $ in Thousands	Dec. 27, 2015	Dec. 28, 2014	Dec. 29, 2013
Goodwill [Line Items]
Gross Amount	$ 369,326	$ 400,837
Accumulated Impairment Losses	205,216	227,268
Goodwill, Net	164,110	173,569	$ 185,864
Merchandise Availability Solutions
Goodwill [Line Items]
Gross Amount	175,602	192,303
Accumulated Impairment Losses	33,189	42,657
Goodwill, Net	142,413	149,646	159,157
Apparel Labeling Solutions
Goodwill [Line Items]
Gross Amount	82,747	84,407
Accumulated Impairment Losses	80,631	82,291
Goodwill, Net	2,116	2,116	2,116
Retail Merchandising Solutions
Goodwill [Line Items]
Gross Amount	110,977	124,127
Accumulated Impairment Losses	91,396	102,320
Goodwill, Net	$ 19,581	$ 21,807	$ 24,591