Note 10 (Detail) (USD $)	3 Months Ended		6 Months Ended
	Mar. 30, 2013	Mar. 24, 2012	Mar. 30, 2013	Mar. 24, 2012
Number of Reportable Segments			3
Acquired Indefinite-lived Intangible Asset, Amount	$ 0		$ 0
Amortization of Intangible Assets	1,113,000	1,114,000	2,232,000	2,246,000
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	4,500,000		4,500,000
Finite-Lived Intangible Assets, Amortization Expense, Year Two	4,400,000		4,400,000
Finite-Lived Intangible Assets, Amortization Expense, Year Three	4,400,000		4,400,000
Finite-Lived Intangible Assets, Amortization Expense, Year Four	4,200,000		4,200,000
Finite-Lived Intangible Assets, Amortization Expense, Year Five	1,700,000		1,700,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life			10 years 36 days
Goodwill, Period Increase (Decrease)	$ 0		$ 0
Minimum [Member]
Finite-Lived Intangible Asset, Useful Life			3 years
Maximum [Member]
Finite-Lived Intangible Asset, Useful Life			20 years