Fair Value - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 27, 2013	Sep. 27, 2013
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of current maturities of long-term debt	$ 56,250	$ 56,250	[1]
Long-term debt	$ 425,000	$ 450,000	[1]

[1] The condensed consolidated balance sheet as of September 27, 2013 was derived from audited financial statements as of that date, but does not include all disclosures required by accounting principles generally accepted in the United States of America.