Discontinued Operations (Statement of Operations Information) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 27, 2014	Sep. 28, 2013
Discontinued Operations and Disposal Groups [Abstract]
Net sales	$ 0	$ 8,447,000	$ 0	$ 34,891,000
(Loss) income from discontinued operations before income taxes	(158,000)	1,605,000	(64,000)	5,040,000
Income tax (benefit) expense on discontinued operations	(59,000)	643,000	(23,000)	2,620,000
Gain on sale of discontinued operations	0	12,530,000	1,559,000	12,530,000
Gain on sale of discontinued operations, tax expense		10,700,000	1,000,000	10,700,000
(Loss) income from discontinued operations, net of taxes	$ (99,000)	$ 13,492,000	$ 1,518,000	$ 14,950,000
Discontinued operations per share - basic	$ 0.00	$ 0.21	$ 0.02	$ 0.23
Discontinued operations per share - diluted	$ 0.00	$ 0.16	$ 0.02	$ 0.23