Acquisition - The Preliminary Estimated Purchase Price Allocation of the Acquired Assets and Assumed Liabilities Based on the Estimated Fair Values (Detail) (USD $) In Thousands, unless otherwise specified	Oct. 03, 2014	Apr. 04, 2014	Jun. 06, 2014 NetNearU [Member]
Business Acquisition [Line Items]
Current assets			$ 8,482
Property and equipment			1,087
Identifiable intangible assets			24,310
Goodwill	117,617	83,627	34,330
Total assets acquired			68,209
Current liabilities			(5,305)
Other long-term liabilities			(2,981)
Total liabilities assumed			(8,286)
Total purchase price			$ 59,923