Shares Used in Computing Diluted Net (Loss) Income Per Share - Additional information (Detail)	12 Months Ended
	Apr. 04, 2014	Mar. 29, 2013	Mar. 30, 2012
Employee Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive shares	920,113	1,601,693	379,618
Restricted stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive shares	618,113	424,464	1,682
ViaSat 401(K) Profit Sharing Plan and Employee Stock Purchase Plan [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive shares	151,619	162,517