Discontinued Operations (Details) (USD $)	3 Months Ended								12 Months Ended
	Sep. 28, 2012	Jun. 29, 2012	Mar. 30, 2012	Dec. 30, 2011	Sep. 30, 2011	Jul. 01, 2011	Apr. 01, 2011	Dec. 31, 2010	Sep. 28, 2012	Sep. 30, 2011	Oct. 01, 2010
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from divestiture									$ 6,479,000	$ 83,078,000	$ 0
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Income (loss) from discontinued operations	0	0	0	297,000	(11,772,000)	(307,000)	392,000	(45,000)	297,000	(11,732,000)	(1,635,000)
Galls LLC
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from divestiture					75,000,000
Loss from Disposal of Discontinued Operation, before Income Tax										(1,500,000)
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Sales									0	162,294,000	152,611,000
Income (loss) before income taxes									491,000	441,000	(2,702,000)
Income tax provision (benefit)									194,000	175,000	(1,067,000)
Discontinued Operations, Income (Loss) Before Loss on Sale									297,000	266,000	(1,635,000)
Loss on sale, net of tax									0	(11,998,000)	0
Income (loss) from discontinued operations									$ 297,000	$ (11,732,000)	$ (1,635,000)