Discontinued Operations (Selected Financial Information Included In Earnings) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2014	Mar. 31, 2013
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss from discontinued operations, net of tax	$ 0	$ (2,556)
Checkview Business [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net revenue	0	12,543
Gross profit	0	(25)
Selling, general, and administrative expenses	0	2,318
Research and development	0	79
Operating loss	0	(2,422)
Loss from discontinued operations before income taxes	0	(2,422)
Loss from discontinued operations, net of tax	$ 0	$ (2,556)