Goodwill and Acquired Intangible Assets - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
	Oct. 04, 2013	Sep. 28, 2012	Oct. 04, 2013	Sep. 28, 2012
Goodwill And Other Intangible Asset [Line Items]
Increase in goodwill related to foreign currency translation			$ 100,000
Amortization of acquired intangible assets	$ 3,796,000	$ 4,041,000	$ 7,297,000	$ 8,105,000
Minimum [Member]
Goodwill And Other Intangible Asset [Line Items]
Other acquired intangible assets estimated useful lives			3 years
Maximum [Member]
Goodwill And Other Intangible Asset [Line Items]
Other acquired intangible assets estimated useful lives			10 years