STOCK-BASED COMPENSATION (Tables)

9 Months Ended

Dec. 31, 2020

Share-based Payment Arrangement [Abstract]

Schedule of Share-based Payment Arrangement, Activity

The following tables summarize information pertaining to the stock-based compensation expense (in thousands):

	Three Months Ended December 31,				Nine Months Ended December 31,
	2020		2019		2020		2019
Cost of service revenue	$	2,472	$	1,387	$	6,696	$	3,566
Cost of other revenue	1,142		839		3,042		2,330
Research and development	8,297		5,535		23,097		13,616
Sales and marketing	9,363		5,197		22,156		14,458
General and administrative	5,565		6,359		19,949		16,335
Total	$	26,839	$	19,317	$	74,940	$	50,305

Restricted Stock Units (RSU) and Performance Stock Units (PSU)

The following table presents activities related to RSU and PSU, collectively Stock Awards (in thousands, except weighted-average grant-date fair value and recognition period):

	Nine Months Ended December 31,
	2020		2019
Stock Awards outstanding at the beginning of the period:	9,191		7,820
Stock Awards granted	6,742		5,886
Stock Awards vested	(3,530)		(2,860)
Stock Awards canceled and forfeited	(969)		(1,056)
Stock Awards outstanding at the end of the period:	11,434		9,790
Weighted-average fair value of grants during the period	$	18.97	$	22.35
Weighted-average remaining recognition period (in years)	1.88		2.13
Total unrecognized compensation expense at period-end	$	157,416	$	128,463

The following table presents activities related to Stock Options (in thousands, except weighted-average grant-date fair value and recognition period):

	Nine Months Ended December 31,
	2020		2019
Stock options outstanding at the beginning of the period:	2,274		3,114
Options exercised	(175)		(391)
Options canceled and forfeited	(28)		(55)
Options outstanding at the end of the period:	2,071		2,668
Total intrinsic value of options exercised during the period	$	1,761	$	4,844
Weighted-average remaining recognition period (in years)	1.33		2.16
Total unrecognized compensation expense at period-end	$	558	$	1,102