Segment Information - Segment Revenues and Operating Profits (Losses) (Parenthetical) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2016	Apr. 03, 2015	Apr. 04, 2014
Segment Reporting Information [Line Items]
Product revenues	$ 664,821	$ 728,074	$ 785,738
Income (loss) from operations	41,119	83,144	3,299
Operating Segments [Member]
Segment Reporting Information [Line Items]
Income (loss) from operations	57,557	101,110	17,913
Satellite Services [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Product revenues	25,606	33,576	42
Income (loss) from operations	81,830	62,379	$ (45,991)
Implied license [Member] | Satellite Services [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Product revenues	25,300	33,000
Income (loss) from operations	$ 25,300
Implied license and other damages [Member] | Satellite Services [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Income (loss) from operations		$ 51,800