Shares Used In Computing Diluted Net (Loss) Income Per Share (Tables)

12 Months Ended

Mar. 31, 2018

Earnings Per Share [Abstract]

Shares Used In Computing Diluted Net (Loss) Income Per Share

	Fiscal Years Ended
	March 31, 2018		March 31, 2017		March 31, 2016
	(In thousands)
Weighted average:
Common shares outstanding used in calculating basic    net (loss) income per share attributable to Viasat,    Inc. common stockholders		58,438		52,318		48,464
Options to purchase common stock as determined by    application of the treasury stock method		—		246		281
TSR performance options to purchase common stock    as determined by application of the treasury stock    method		—	*		*
Restricted stock units to acquire common stock as    determined by application of the treasury stock    method		—		658		533
Potentially issuable shares in connection with certain    terms of the ViaSat 401(k) Profit Sharing Plan and    Employee Stock Purchase Plan		—		174		167
Shares used in computing diluted net (loss) income per    share attributable to Viasat, Inc. common    stockholders		58,438		53,396		49,445

* The Company began granting TSR performance stock options to executive officers in the third quarter of fiscal year 2018 (see Note 6).