Goodwill and Acquired Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2015	Jul. 04, 2014
Finite-Lived Intangible Assets [Line Items]
Change in goodwill	$ 500
Amortization of acquired intangible assets	4,810	$ 4,029
Engreen [Member]
Finite-Lived Intangible Assets [Line Items]
Other acquired assets related to acquisition	$ 7,600
Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Other acquired intangible assets estimated useful lives	2 years
Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Other acquired intangible assets estimated useful lives	10 years