Discontinued Operations (Statement of Operations Information) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 27, 2015	Jun. 28, 2014	Jun. 27, 2015	Jun. 28, 2014
Discontinued Operations and Disposal Groups [Abstract]
Income (loss) from discontinued operations before income taxes	$ 3	$ (82)	$ (29)	$ 94
Income tax (benefit) expense on discontinued operations	(11)	(32)	(11)	36
Gain on sale of discontinued operations	0	714	0	1,559
Gain on sale of discontinued operations, tax expense		500		1,000
Income (loss) from discontinued operations, net of taxes	$ 14	$ 664	$ (18)	$ 1,617
Discontinued operations per share - basic	$ 0.00	$ 0.01	$ 0.00	$ 0.02
Discontinued operations per share - diluted	$ 0.00	$ 0.01	$ 0.00	$ 0.02