Discontinued Operations (Selected Financial Information Included In Earnings) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Sep. 23, 2012	Jun. 24, 2012	Dec. 30, 2012	Dec. 25, 2011	Dec. 26, 2010
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Asset impairment	$ 800	$ 700	$ 0	$ 592	$ 0
(Loss) earnings from discontinued operations, net of tax			(15)	0	0
Checkview Business [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net revenue			76,519	101,594	105,227
Gross profit			11,585	20,560	29,325
Selling, general, & administrative expense			12,253	13,700	13,866
Research and development			410	544	831
Asset impairment			329	0	0
Goodwill impairment			3,263	0	0
Operating (loss) income			(4,670)	6,316	14,628
(Loss) earnings from discontinued operations before income taxes			(4,670)	6,316	14,628
(Loss) earnings from discontinued operations, net of tax			(4,917)	6,349	9,098
Banking Security Systems Integration Business Unit [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net revenue			10,751	13,565	12,820
Gross profit			1,335	2,541	2,874
Selling, general, & administrative expense			2,550	4,095	4,043
Restructuring expenses			0	113	0
Asset impairment			1,442	2,781	0
Goodwill impairment			370	3,411	0
Operating (loss) income			(3,027)	(7,859)	(1,169)
Loss on disposal			(15)	0	0
(Loss) earnings from discontinued operations before income taxes			(3,042)	(7,859)	(1,169)
(Loss) earnings from discontinued operations, net of tax			$ (3,042)	$ (7,514)	$ (773)