Segment Information - Segment Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Apr. 03, 2015	Apr. 04, 2014
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 2,405,846	$ 2,158,378	$ 1,960,115
Operating Segments [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	582,399	554,371	509,685
Operating Segments [Member] | Satellite Services [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	57,529	63,790	73,382
Operating Segments [Member] | Commercial Networks [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	212,943	217,268	229,455
Operating Segments [Member] | Government Systems [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	311,927	273,313	206,848
Corporate, Non-Segment [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 1,823,447	$ 1,604,007	$ 1,450,430