Fair Value - Additional Information (Detail) (USD $)				6 Months Ended
	Mar. 29, 2013	Sep. 28, 2012		Mar. 29, 2013 Calypso Medical Technologies, Inc. Minimum	Mar. 29, 2013 Calypso Medical Technologies, Inc. Maximum	Mar. 29, 2013 InfiMed, Inc. Minimum	Mar. 29, 2013 InfiMed, Inc. Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration, estimated sales units used in simulation				69	193	171	299
Contingent consideration, estimated discount rates used in simulation				0.13%	0.42%	1.37%	1.75%
Long-term debt at fair value	$ 6,700,000	$ 6,800,000
Long-term debt at carrying value	$ 6,250,000	$ 6,250,000	[1]

[1] The condensed consolidated balance sheet as of September 28, 2012 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.