Acquisition - Additional Information (Detail) - USD ($) $ in Thousands		3 Months Ended	6 Months Ended
	Jun. 06, 2014	Jul. 04, 2014	Sep. 30, 2015	Oct. 03, 2014
Business Acquisition [Line Items]
Payments related to acquisition of businesses, net of cash acquired			$ 3,613	$ 56,545
NetNearU [Member]
Business Acquisition [Line Items]
Purchase price	$ 60,200
Cash acquired	4,100
Payments related to acquisition of businesses, net of cash acquired	$ 56,100
Total merger-related transaction costs incurred by the Company		$ 400