Discontinued Operations (Selected Financial Information Included In Earnings) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 28, 2014	Dec. 29, 2013	Dec. 30, 2012
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Asset impairment	$ 864	$ 4,820	$ 0
Loss from discontinued operations, net of tax	0	(13,598)	(15)
Loss from discontinued operations, net of tax (benefit) expense of $0, ($68), and $247	0	(17,156)	(7,959)
Checkview Business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net revenue		16,084	76,519
Gross profit		449	11,585
Selling, general, & administrative expense		3,970	12,253
Research and development		105	410
Asset impairment		0	329
Goodwill impairment		0	3,263
Operating loss		(3,626)	(4,670)
Gain (loss) on disposal		(13,611)	0
Loss from discontinued operations before income taxes		(17,237)	(4,670)
Loss from discontinued operations, net of tax		(17,169)	(4,917)
Banking Security Systems Integration Business Unit
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net revenue		0	10,751
Gross profit		0	1,335
Selling, general, & administrative expense		0	2,550
Asset impairment		0	1,442
Goodwill impairment		0	370
Operating loss		0	(3,027)
Gain (loss) on disposal		13	(15)
Loss from discontinued operations before income taxes		13	(3,042)
Loss from discontinued operations, net of tax (benefit) expense of $0, ($68), and $247		$ 13	$ (3,042)