Summary of Fair Values of Assets Acquired and Liabilities Assumed Purchase Price Allocation (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended			1 Months Ended
	Mar. 28, 2014	Mar. 29, 2013	Dec. 31, 2013	Mar. 14, 2014 JADAK
Schedule of Business Acquisitions, Purchase Price Allocation [Line Items]
Cash				$ 1,140
Accounts receivable				7,929
Inventory				7,856
Property and equipment				904
Intangible assets				40,512
Other assets				1,980
Goodwill	115,182		71,156	44,026
Total assets acquired				104,347
Accounts payable				3,067
Other liabilities				2,031
Deferred tax liabilities				4,389
Total liabilities assumed				9,487
Total purchase price				94,860
Less cash acquired				(1,140)
Total purchase price, net of cash acquired	$ 92,360	$ 82,653		$ 93,720