Discontinued Operations (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended			9 Months Ended		12 Months Ended
	Sep. 23, 2012	Jun. 24, 2012	Sep. 25, 2011	Sep. 23, 2012	Sep. 25, 2011	Dec. 25, 2011
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Goodwill impairment	$ 0		$ 0	$ 64,437	$ 0
Intangible impairment	770	672	0	1,442	0	2,800
Banking Security Systems Integration business unit [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Goodwill impairment		$ 370				$ 3,400