STOCK-BASED COMPENSATION (Tables)

3 Months Ended

Jun. 30, 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 from stock options and stock awards (in thousands):

	Three Months Ended June 30,
	2020		2019
Cost of service revenue	$	1,814	$	997
Cost of other revenue	787		734
Research and development	6,545		3,864
Sales and marketing	5,739		3,921
General and administrative	7,894		4,081
Total	$	22,779	$	13,597

Stock options and stock awards activities under the Company's stock plans during three months ended June 30, 2020 and 2019 are summarized as follows (in thousands, except weighted-average grant-date fair value and recognition period):

	Three Months Ended June 30,
	2020			2019
Stock options outstanding at the beginning of the period:	2,274			3,114
Options granted	—			—
Options exercised	(1		)	(124		)
Options forfeited	(14		)	(16		)
Options outstanding at the end of the period:	2,259			2,974
Weighted-average fair value of grants during the period	$	—		$	—
Total intrinsic value of options exercised during the period	$	5		$	1,402
Weighted-average remaining recognition period (in years)	1.73			2.46
Stock awards outstanding at the beginning of the period:	9,191			7,820
Stock awards granted	1,304			1,147
Stock awards vested	(721		)	(329		)
Stock awards canceled and forfeited	(331		)	(445		)
Stock awards outstanding at the end of the period:	9,443			8,193
Weighted-average fair value of grants during the period	$	19.22		$	22.40
Weighted-average remaining recognition period (in years)	1.76			2.11
Total unrecognized compensation expense at period-end	$	116,957		$	109,422