Commitments - Additional Information (Detail) - USD ($)	1 Months Ended	3 Months Ended	12 Months Ended
	May. 31, 2013	Mar. 31, 2016	Mar. 31, 2016	Apr. 03, 2015	Apr. 04, 2014
Long-term Purchase Commitment [Line Items]
Satellite performance incentives obligation		$ 22,000,000	$ 22,000,000
Satellite performance incentives obligation, current		2,500,000	2,500,000
Satellite performance incentives obligation, Noncurrent		19,514,000	$ 19,514,000	$ 20,121,000
Description of operating lease arrangements			The Company leases office and other facilities under non-cancelable operating leases with initial terms ranging from one to fifteen years which expire between fiscal year 2017 and fiscal year 2027 and provide for pre-negotiated fixed rental rates during the terms of the lease. Certain of the Company's facilities leases contain option provisions which allow for extension of the lease terms.
Rent expense			$ 27,700,000	$ 24,500,000	$ 22,300,000
Satellite Performance Incentives Obligation [Member]
Long-term Purchase Commitment [Line Items]
Commitment amount			$ 32,000,000
Period of in-orbit satellite performance incentive payments, including interest			15 years
Future minimum payments under satellite performance incentives obligation for fiscal year 2017		2,100,000	$ 2,100,000
Future minimum payments under satellite performance incentives obligation for fiscal year 2018		2,300,000	2,300,000
Future minimum payments under satellite performance incentives obligation for fiscal year 2019		2,400,000	2,400,000
Future minimum payments under satellite performance incentives obligation for fiscal year 2020		2,600,000	2,600,000
Future minimum payments under satellite performance incentives obligation for fiscal year 2021		2,800,000	2,800,000
Future minimum payments under satellite performance incentives obligation thereafter		19,800,000	19,800,000
Satellite Capacity Agreements [Member]
Long-term Purchase Commitment [Line Items]
Future minimum payments on purchase commitments for fiscal year 2017		44,800,000	44,800,000
Future minimum payments on purchase commitments for fiscal year 2018		15,400,000	15,400,000
Future minimum payments on purchase commitments for fiscal year 2019		11,700,000	11,700,000
Future minimum payments on purchase commitments for fiscal year 2020		9,500,000	9,500,000
Future minimum payments on purchase commitments for fiscal year 2021		3,700,000	3,700,000
Future minimum payments on purchase commitments thereafter		0	$ 0
Satellite - ViaSat-2 [Member] | Capital Addition [Member]
Long-term Purchase Commitment [Line Items]
Commitment amount	$ 358,000,000
ViaSat-3 Class Satellites [Member] | Capital Addition [Member]
Long-term Purchase Commitment [Line Items]
Commitment amount		$ 56,500,000