Goodwill and Acquired Intangible Assets - Additional Information (Detail) (USD $)	3 Months Ended
	Jun. 28, 2013	Jun. 29, 2012
Goodwill And Other Intangible Asset [Line Items]
Decrease in goodwill related to foreign currency translation	$ 400,000
Amortization of acquired intangible assets	$ 3,501,000	$ 4,064,000
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	9 years