Business Combinations - Additional Information (Detail) (USD $)				1 Months Ended
	Jun. 27, 2014	Sep. 27, 2013		Apr. 30, 2014 Velocity Medical Solutions L L C	Apr. 30, 2014 Velocity Medical Solutions L L C Developed Technology	Apr. 30, 2014 Velocity Medical Solutions L L C Customer Relationships	Apr. 30, 2014 Velocity Medical Solutions L L C Trade Name
Business Acquisition [Line Items]
Total purchase price				$ 19,900,000
Cash consideration				17,000,000
Cash consideration held back				2,600,000
Earn out consideration	4,200,000	2,500,000		2,900,000
Allocated to amortizable intangible assets				10,600,000
Goodwill acquired	236,130,000	225,335,000	[1]	9,800,000
Net assumed liabilities				$ (500,000)
Amortization period for intangible assets					6 years	7 years	6 years

[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.