Discontinued Operations Statement of Operations Information (Details) (USD $)	3 Months Ended								12 Months Ended
	Dec. 29, 2012	Sep. 29, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Oct. 01, 2011	Jul. 02, 2011	Apr. 02, 2011	Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011
Discontinued Operations [Line Items]
Net sales									$ 9,190,000	$ 99,611,000	$ 106,187,000
Income (loss) from discontinued operations before income taxes									332,000	(3,697,000)	14,184,000
Income tax expense (benefit) on discontinued operations									95,000	3,840,000	2,863,000
Loss on sale of discontinued operations, net of taxes									(6,260,000)	0	0
(Loss) income from discontinued operations, net of taxes	(767,000)	(183,000)	(439,000)	(4,634,000)	(12,765,000)	1,531,000	1,926,000	1,771,000	(6,023,000)	(7,537,000)	11,321,000
Discontinued operations per share - basic	$ (0.01)	$ 0.00	$ (0.01)	$ (0.07)	$ (0.20)	$ 0.02	$ 0.03	$ 0.02	$ (0.10)	$ (0.12)	$ 0.18
Discontinued operations per share - diluted	$ (0.01)	$ 0.00	$ (0.01)	$ (0.07)	$ (0.20)	$ 0.02	$ 0.03	$ 0.02	$ (0.10)	$ (0.12)	$ 0.18
Discontinued Operations [Abstract]
Tax effect on income (loss) from discontinued operations									(2,600,000)
Impairment of goodwill related to discontinued operations									0	13,500,000	0
Income tax expense (benefit)									60,067,000	9,477,000	(53,202,000)
Prior Discontinued Operations [Member]
Discontinued Operations [Line Items]
(Loss) income from discontinued operations, net of taxes									1,800,000
Discontinued Operations [Abstract]
Tax effect on income (loss) from discontinued operations									1,200,000
Supremex [Member]
Discontinued Operations [Abstract]
Income tax expense (benefit)											2,800,000
Supremex [Member] | Scenario, Previously Reported [Member]
Discontinued Operations [Abstract]
Income tax expense (benefit)											(4,400,000)
Supremex [Member] | Scenario, Adjustment [Member]
Discontinued Operations [Abstract]
Income tax expense (benefit)											$ 1,600,000