Stock-Based Compensation (Tables)

6 Months Ended

Sep. 30, 2019

Stock-Based Compensation

Summary of activity in the plans with respect to stock options

		Weighted
		Average
		Exercise
	Number of	Price Per
	Shares	Share
	(In thousands)
Options outstanding at March 31, 2019	5,035	$	3.70
Granted	—		—
Exercised	(33)		2.34
Forfeited	(14)		4.39
Expired	—		—
Options outstanding at September 30, 2019	4,988	$	3.70

Summary of activity with respect to RSUs

	Number of
	Shares
	(In thousands)
RSUs outstanding at March 31, 2019	112
Granted	327
Vested	(61)
Forfeited	(2)
RSUs outstanding at September 30, 2019	376

Schedule of stock-based compensation expense

	Three Months Ended				Six Months Ended
	September 30,				September 30,
	2019		2018		2019		2018
	(In thousands)				(In thousands)
Cost of revenues	$	41	$	35	$	82	$	69
Selling, general and administrative expense		694		432		1,197		859
Research and development expense		58		37		116		97
Total stock-based compensation expense	$	793	$	504	$	1,395	$	1,025