Revenue Components, Geographic Revenues and Significant Customers - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Mar. 29, 2015	Dec. 28, 2014	Sep. 28, 2014	Jun. 29, 2014	Mar. 30, 2014	Dec. 29, 2013	Sep. 29, 2013	Jun. 30, 2013	Mar. 29, 2015 Segment	Mar. 30, 2014	Mar. 31, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of operating segments									1
Net revenues	$ 133,043	$ 140,203	$ 127,503	$ 119,449	$ 115,720	$ 119,449	$ 112,622	$ 113,116	$ 520,198	$ 460,907	$ 484,538
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues									$ 90,400	$ 56,000	$ 65,000