Financial Instruments - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Jul. 03, 2016	Jul. 05, 2015	Jul. 03, 2016	Jul. 05, 2015	Dec. 31, 2015
Financial Instruments and Fair Value [Line Items]
Available-for-sale securities, realized loss	$ 200,000	$ 100,000	$ 300,000	$ 100,000
Available-for-sale securities, realized gain	300,000	400,000	400,000	1,000,000
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	162,997,000		162,997,000		$ 601,660,000
Fair market value of investments with unrealized losses greater than one year	4,000,000		4,000,000		900,000
Aggregate loss of investments with unrealized losses greater than one year			400,000		500,000
Fair market value of investments with unrealized losses less than one year	159,000,000		159,000,000		600,800,000
Aggregate loss of investments with unrealized losses less than one year			100,000		3,600,000
Gains (losses) on foreign currency transactions	6,900,000	(2,100,000)	10,400,000	2,200,000
Realized gain(loss) on foreign currency contracts	(6,900,000)	$ 1,600,000	(10,200,000)	$ (1,900,000)
Universal Robots
Financial Instruments and Fair Value [Line Items]
Maximum payment per earn-out			25,000,000
Avionics Interface Technologies, LLC
Financial Instruments and Fair Value [Line Items]
Maximum payment per earn-out			1,100,000
Foreign Currency Forward Contracts
Financial Instruments and Fair Value [Line Items]
Notional amount of foreign currency forward contracts	$ 117,700,000		117,700,000		114,100,000
Gains (losses) on foreign currency transactions			$ 100,000		$ 0