LONG-TERM DEBT (Details) (USD $)	12 Months Ended
	Oct. 02, 2011	Oct. 03, 2010	Sep. 27, 2009	Dec. 20, 2007
Debt Instruments [Abstract]
Amount of term loan already paid	$ 20,000,000
Long-term Debt and Capital Lease Obligations [Abstract]
Bank Term Loan due December, 2012, variable interest (0.87% and 1.04% at October 2, 2011 and October 3, 2010, respectively)	80,000,000	100,000,000
Capital Lease Obligations	104,325,000	94,653,000
Other Obligations	3,005,000	4,300,000
Total	287,330,000	306,096,000
Less Current Portion	(3,902,000)	(10,775,000)
Total long-term debt	283,428,000	295,321,000
Debt Instrument, Interest Rate, Stated Percentage [Abstract]
Description of reference rate basis	LIBOR Market Index Rate or LIBOR Rate	LIBOR Market Index Rate or LIBOR Rate
Line of Credit Facility [Abstract]
Number of banks entered into credit agreement				11
Amount available for borrowings under revolving credit facility	321,748,000
Amount available for borrowings under revolving credit facility	28,252,000
Number of years agreement under revolving credit facility	5 years
Aggregate amount of revolving credit facility	350,000,000
Additional amount of revolving credit facility	100,000,000
Commitment fee rate applied to net unused balance	0.09%	0.09%	0.12%
Long-term Debt, by Maturity [Abstract]
Long-term debt maturities in 2012	3,872,000
Long-term debt maturities in 2013	84,058,000
Long-term debt maturities in 2014	4,295,000
Long-term debt maturities in 2015	3,539,000
Long-term debt maturities in 2016	3,866,000
Interest Costs Incurred [Abstract]
Total interest expense, net of amounts capitalized	19,116,000	19,478,000	16,941,000
Capitalized interest totaled	632,000	624,000	2,881,000
Senior Note Due April 2017
Long-term Debt and Capital Lease Obligations [Abstract]
Senior Notes	50,000,000	50,000,000
Total	50,000,000	50,000,000
Debt Instrument, Interest Rate, Stated Percentage [Abstract]
Interest rate of senior notes	7.72%	7.72%
Senior Note Due July 2017
Long-term Debt and Capital Lease Obligations [Abstract]
Senior Notes	50,000,000	50,000,000
Total	50,000,000	50,000,000
Debt Instrument, Interest Rate, Stated Percentage [Abstract]
Interest rate of senior notes	7.55%	7.55%
Senior Note Due March 2011
Long-term Debt and Capital Lease Obligations [Abstract]
Senior Notes	0	7,143,000
Total	0	7,143,000
Debt Instrument, Interest Rate, Stated Percentage [Abstract]
Interest rate of senior notes	6.48%	6.48%
Capital Lease Obligations
Long-term Debt and Capital Lease Obligations [Abstract]
Total	104,325,000	94,653,000
Other Obligations
Long-term Debt and Capital Lease Obligations [Abstract]
Total	3,005,000	4,300,000
Loans Payable
Debt Instruments [Abstract]
Amount of term loan already paid	20,000,000
Non-amortizing term loan	$ 100,000,000
Debt Instrument, Interest Rate, Stated Percentage [Abstract]
Variable interest rate	8.70%	10.40%