Long-Term Debt (Details) (USD $)	12 Months Ended
	Sep. 30, 2011		Oct. 01, 2010		Oct. 02, 2009
Debt Instrument [Line Items]
Total debt	$ 16,100,000		$ 23,400,000
Less: current maturities of long-term debt	9,876,000		5,525,000
Long-term debt	6,250,000		17,869,000
Carrying amount of land and buildings pledged as collateral	7,800,000
Interest paid on long-term debt	1,500,000		2,100,000		2,600,000
Aggregate debt maturities - FY2012	9,900,000
Aggregate debt maturities - FY2013	0
Aggregate debt maturities - FY2014	6,200,000
Estimated fair value, long-term debt	17,200,000		25,400,000
Unsecured Term Loan, 6.70% Due In Fiscal Years 2012 And 2014 [Member]
Debt Instrument [Line Items]
Unsecured term loan	12,500,000		12,500,000
Fixed interest rate	6.70%
Debt instrument maturity date	2012		2014
Debt instrument installments payment	6,250,000
Unsecured Term Loan, 6.76% Paid In Fiscal Year 2011 [Member]
Debt Instrument [Line Items]
Unsecured term loan	0		5,300,000
Fixed interest rate	6.76%
Debt instrument maturity date	2011
Debt instrument installments payment	5,250,000
Loan, Purchases Of Land And Building 7.58% Fully Paid In Fiscal Year 2011 [Member]
Debt Instrument [Line Items]
Fixed interest rate	7.58%
Secured loans	0		1,900,000
Debt instrument maturity date	2011
Loan, Purchases Of Land And Building 7.34% Payable In Fiscal Year 2012 [Member]
Debt Instrument [Line Items]
Fixed interest rate	7.34%
Secured loans	$ 3,600,000	[1]	$ 3,700,000	[1]
Debt instrument maturity date	2012

[1] As of September 30, 2011, land and buildings with a carrying amount of $7.8 million were pledged as collateral against these loans.