Segment Information - Segment Revenues and Operating Profits (Losses) (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Apr. 03, 2015	Apr. 04, 2014	Mar. 29, 2013
Revenues:
Product revenues	$ 728,074us-gaap_SalesRevenueGoodsNet	$ 785,738us-gaap_SalesRevenueGoodsNet	$ 664,417us-gaap_SalesRevenueGoodsNet
Service revenues	654,461us-gaap_SalesRevenueServicesNet	565,724us-gaap_SalesRevenueServicesNet	455,273us-gaap_SalesRevenueServicesNet
Total revenues	1,382,535us-gaap_SalesRevenueNet	1,351,462us-gaap_SalesRevenueNet	1,119,690us-gaap_SalesRevenueNet
Operating profits (losses):
Amortization of acquired intangible assets	(17,966)	(14,614)	(15,584)
Income (loss) from operations	83,144us-gaap_OperatingIncomeLoss	3,299us-gaap_OperatingIncomeLoss	(20,362)us-gaap_OperatingIncomeLoss
Satellite Services [Member]
Operating profits (losses):
Amortization of acquired intangible assets	(11,058)	(11,058)	(12,401)
Commercial Networks [Member]
Operating profits (losses):
Amortization of acquired intangible assets	(1,452)	(1,337)	(666)
Government Systems [Member]
Operating profits (losses):
Amortization of acquired intangible assets	(5,456)	(2,219)	(2,517)
Operating Segments [Member]
Operating profits (losses):
Income (loss) from operations	101,110	17,913	(4,778)
Operating Segments [Member] \| Satellite Services [Member]
Revenues:
Product revenues	33,576	42	4,715
Service revenues	466,284	390,666	272,272
Total revenues	499,860	390,708	276,987
Operating profits (losses):
Income (loss) from operations	62,379	(45,991)	(79,172)
Operating Segments [Member] \| Commercial Networks [Member]
Revenues:
Product revenues	331,052	378,577	295,469
Service revenues	16,078	16,944	19,471
Total revenues	347,130	395,521	314,940
Operating profits (losses):
Income (loss) from operations	(33,616)	(12,134)	(11,079)
Operating Segments [Member] \| Government Systems [Member]
Revenues:
Product revenues	363,446	407,119	364,233
Service revenues	172,099	158,114	163,530
Total revenues	535,545	565,233	527,763
Operating profits (losses):
Income (loss) from operations	72,347	76,038	85,473
Intersegment Elimination [Member]
Revenues:
Total revenues	0	0	0
Operating profits (losses):
Income (loss) from operations	0	0	0
Corporate, Non-Segment [Member]
Operating profits (losses):
Income (loss) from operations	0	0	0
Material Reconciling Items [Member]
Operating profits (losses):
Amortization of acquired intangible assets	$ (17,966)	$ (14,614)	$ (15,584)

The net result for the period of deducting operating expenses from operating revenues.

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- Definition

Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1(a))

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

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-Number 210

-Section 03

-Paragraph 1

-Article 5

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- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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- Definition

Aggregate revenue during the period from services rendered in the normal course of business, after deducting allowances and discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

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-Paragraph 2

-Subparagraph (SX 210.5-03.1(d))

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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- Definition

The aggregate expense charged against earnings to allocate the cost of acquired intangible assets.

+ References

No definition available.

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