Condensed Consolidated Balance Sheet (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 28, 2012	Mar. 30, 2012	Dec. 30, 2011	Apr. 01, 2011
Current assets:
Cash and cash equivalents	$ 112,667	$ 172,583	$ 45,842	$ 40,490
Accounts receivable, net	237,551	211,690
Inventories	126,437	127,646
Deferred income taxes	20,214	20,316
Prepaid expenses and other current assets	36,663	30,917
Total current assets	533,532	563,152
Satellites, net	547,805	585,731
Property and equipment, net	347,730	294,973
Other acquired intangible assets, net	51,069	63,041
Goodwill	83,561	83,461
Other assets	185,238	136,795
Total assets	1,748,935	1,727,153
Current liabilities:
Accounts payable	76,930	75,040
Accrued liabilities	139,547	159,762
Current portion of other long-term debt	1,027	1,240
Total current liabilities	217,504	236,042
Senior Notes, net	585,265	547,791
Other long-term debt	62	774
Other liabilities	58,039	50,353
Total liabilities	860,870	834,960
ViaSat, Inc. stockholders' equity
Total ViaSat, Inc. stockholders' equity	883,599	887,975
Noncontrolling interest in subsidiary	4,466	4,218
Total equity	888,065	892,193
Total liabilities and equity	1,748,935	1,727,153
Issuing Parent Company [Member]
Current assets:
Cash and cash equivalents	99,961	162,426	38,218	24,347
Accounts receivable, net	216,196	192,313
Inventories	96,661	106,151
Deferred income taxes	18,380	18,482
Prepaid expenses and other current assets	30,618	27,128
Current portion of intercompany receivables	91,642
Total current assets	553,458	506,500
Satellites, net	342,778	358,580
Property and equipment, net	185,075	178,611
Other acquired intangible assets, net	1,824	2,633
Goodwill	63,938	63,939
Investments in subsidiaries and intercompany receivables	394,545	437,631
Other assets	138,874	117,300
Total assets	1,680,492	1,665,194
Current liabilities:
Accounts payable	62,590	62,085
Accrued liabilities	107,373	128,327
Current portion of other long-term debt	107	129
Current portion of intercompany payables	1,403
Total current liabilities	171,473	190,541
Senior Notes, net	585,265	547,791
Other long-term debt		74
Intercompany payables	308	1,428
Other liabilities	39,847	37,385
Total liabilities	796,893	777,219
ViaSat, Inc. stockholders' equity
Total ViaSat, Inc. stockholders' equity	883,599	887,975
Total equity	883,599	887,975
Total liabilities and equity	1,680,492	1,665,194
Guarantor Subsidiaries [Member]
Current assets:
Cash and cash equivalents	2,787	439	175	7,600
Accounts receivable, net	14,090	12,411
Inventories	22,910	16,474
Deferred income taxes	1,526	1,526
Prepaid expenses and other current assets	5,276	2,923
Current portion of intercompany receivables	1,581
Total current assets	48,170	33,773
Satellites, net	205,027	227,151
Property and equipment, net	156,494	110,137
Other acquired intangible assets, net	42,754	52,389
Goodwill	9,687	9,687
Investments in subsidiaries and intercompany receivables	1,439	2,501
Other assets	45,682	18,886
Total assets	509,253	454,524
Current liabilities:
Accounts payable	13,142	12,192
Accrued liabilities	25,775	27,477
Current portion of other long-term debt	920	1,111
Current portion of intercompany payables	89,977
Total current liabilities	129,814	40,780
Other long-term debt	62	700
Intercompany payables		4,462
Other liabilities	15,810	10,269
Total liabilities	145,686	56,211
ViaSat, Inc. stockholders' equity
Total ViaSat, Inc. stockholders' equity	363,567	398,313
Total equity	363,567	398,313
Total liabilities and equity	509,253	454,524
Non-Guarantor Subsidiaries [Member]
Current assets:
Cash and cash equivalents	9,919	9,718	7,449	8,543
Accounts receivable, net	7,265	6,966
Inventories	6,866	5,021
Deferred income taxes	308	308
Prepaid expenses and other current assets	769	866
Current portion of intercompany receivables	1,403
Total current assets	26,530	22,879
Property and equipment, net	6,161	6,225
Other acquired intangible assets, net	6,491	8,019
Goodwill	9,936	9,835
Investments in subsidiaries and intercompany receivables	302	1,428
Other assets	682	609
Total assets	50,102	48,995
Current liabilities:
Accounts payable	1,198	763
Accrued liabilities	6,399	3,958
Current portion of intercompany payables	3,246
Total current liabilities	10,843	4,721
Intercompany payables	6,263	9,429
Other liabilities	2,382	2,699
Total liabilities	19,488	16,849
ViaSat, Inc. stockholders' equity
Total ViaSat, Inc. stockholders' equity	30,614	32,146
Total equity	30,614	32,146
Total liabilities and equity	50,102	48,995
Consolidation and Elimination Adjustments [Member]
Current assets:
Current portion of intercompany receivables	(94,626)
Total current assets	(94,626)
Investments in subsidiaries and intercompany receivables	(396,286)	(441,560)
Total assets	(490,912)	(441,560)
Current liabilities:
Current portion of intercompany payables	(94,626)
Total current liabilities	(94,626)
Intercompany payables	(6,571)	(15,319)
Total liabilities	(101,197)	(15,319)
ViaSat, Inc. stockholders' equity
Total ViaSat, Inc. stockholders' equity	(394,181)	(430,459)
Noncontrolling interest in subsidiary	4,466	4,218
Total equity	(389,715)	(426,241)
Total liabilities and equity	$ (490,912)	$ (441,560)