Financial Statements of Parent and Subsidiary Guarantors (Details 1) (USD $) In Thousands	3 Months Ended
	Jul. 01, 2011	Jul. 02, 2010
Revenues:
Product revenues	$ 122,546	$ 125,002
Service revenues	72,555	67,002
Total revenues	195,101	192,004
Operating expenses:
Cost of product revenues	92,285	94,714
Cost of service revenues	49,316	39,062
Selling, general and administrative	41,733	38,921
Independent research and development	5,694	7,314
Amortization of acquired intangible assets	4,772	4,610
(Loss) income from operations	1,301	7,383
Other income (expense):
Interest income	26	139
Interest expense		(2,141)
Income (loss) before income taxes	1,327	5,381
(Benefit from) provision for income taxes	(267)	1,981
Net income (loss)	1,594	3,400
Less: Net (loss) income attributable to the noncontrolling interest, net of tax	(165)	139
Net income (loss) attributable to ViaSat, Inc.	1,759	3,261
Parent Company [Member]
Revenues:
Product revenues	118,913	125,141
Service revenues	17,697	11,222
Total revenues	136,610	136,363
Operating expenses:
Cost of product revenues	89,564	95,288
Cost of service revenues	10,892	8,004
Selling, general and administrative	26,615	25,561
Independent research and development	5,365	7,261
Amortization of acquired intangible assets	970	1,260
(Loss) income from operations	3,204	(1,011)
Other income (expense):
Interest income	133	225
Interest expense		(2,141)
Income (loss) before income taxes	3,337	(2,927)
(Benefit from) provision for income taxes	(20)	(1,544)
Equity in net income (loss) of consolidated subsidiaries	(1,901)	4,713
Net income (loss)	1,456	3,330
Net income (loss) attributable to ViaSat, Inc.	1,456	3,330
Guarantor Subsidiaries [Member]
Revenues:
Product revenues	652	551
Service revenues	53,351	53,543
Total revenues	54,003	54,094
Operating expenses:
Cost of product revenues	757	475
Cost of service revenues	37,136	29,681
Selling, general and administrative	13,077	12,478
Amortization of acquired intangible assets	3,238	3,238
(Loss) income from operations	(205)	8,222
Other income (expense):
Income (loss) before income taxes	(205)	8,222
(Benefit from) provision for income taxes	(90)	3,309
Net income (loss)	(115)	4,913
Net income (loss) attributable to ViaSat, Inc.	(115)	4,913
Non-Guarantor Subsidiaries [Member]
Revenues:
Product revenues	3,250	1,342
Service revenues	2,226	2,655
Total revenues	5,476	3,997
Operating expenses:
Cost of product revenues	2,573	944
Cost of service revenues	1,958	1,765
Selling, general and administrative	2,044	882
Independent research and development	338	53
Amortization of acquired intangible assets	564	112
(Loss) income from operations	(2,001)	241
Other income (expense):
Interest income	2	3
Interest expense	(109)	(89)
Income (loss) before income taxes	(2,108)	155
(Benefit from) provision for income taxes	(157)	216
Net income (loss)	(1,951)	(61)
Net income (loss) attributable to ViaSat, Inc.	(1,951)	(61)
Consolidation Eliminations [Member]
Revenues:
Product revenues	(269)	(2,032)
Service revenues	(719)	(418)
Total revenues	(988)	(2,450)
Operating expenses:
Cost of product revenues	(609)	(1,993)
Cost of service revenues	(670)	(388)
Selling, general and administrative	(3)
Independent research and development	(9)
(Loss) income from operations	303	(69)
Other income (expense):
Interest income	(109)	(89)
Interest expense	109	89
Income (loss) before income taxes	303	(69)
Equity in net income (loss) of consolidated subsidiaries	1,901	(4,713)
Net income (loss)	2,204	(4,782)
Less: Net (loss) income attributable to the noncontrolling interest, net of tax	(165)	139
Net income (loss) attributable to ViaSat, Inc.	$ 2,369	$ (4,921)