Discontinued Operations (Selected Financial Information Included In Earnings) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended	12 Months Ended	3 Months Ended		9 Months Ended
	Sep. 29, 2013	Sep. 23, 2012	Sep. 29, 2013	Sep. 23, 2012	Sep. 23, 2012 Banking Security Systems Integration Business Unit [Member]	Sep. 23, 2012 Banking Security Systems Integration Business Unit [Member]	Dec. 30, 2012 Banking Security Systems Integration Business Unit [Member]	Sep. 29, 2013 Checkview Business [Member]	Sep. 23, 2012 Checkview Business [Member]	Sep. 29, 2013 Checkview Business [Member]	Sep. 23, 2012 Checkview Business [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net revenue					$ 2,808	$ 10,504		$ 2	$ 19,350	$ 16,086	$ 58,245
Gross profit					355	1,431		(81)	3,354	201	9,025
Selling, general, and administrative expenses					752	2,416		0	3,069	3,970	9,621
Disposal group including discontinued operations impairment of intangible assets excluding goodwill			0	1,442	770	1,442
Disposal group, including discontinued operation, goodwill impairment					0	370
Research and development								0	106	105	323
Operating (loss) income					(1,167)	(2,797)		(81)	179	(3,874)	(919)
Loss on disposal							(15)	(19)	0	(13,043)	0
Loss from discontinued operations before income taxes					(1,167)	(2,797)		(100)	179	(16,917)	(919)
Loss from discontinued operations, net of tax	$ (100)	$ (1,105)	$ (16,985)	$ (3,830)	$ (1,167)	$ (2,797)		$ (100)	$ 62	$ (16,985)	$ (1,033)