SHARE-BASED COMPENSATION (Tables)

3 Months Ended

Jun. 30, 2020

Share-based Payment Arrangement [Abstract]

Summary of Share-Based Compensation Expense

The following is a summary of share-based compensation expense including restricted stock units pursuant to the Company's 2007 Equity Incentive Plan, as amended (Amended 2007 Plan), and 2019 Equity Incentive Plan (2019 Plan) and employee stock purchases made under the Company's 2011 Employee Stock Purchase Plan, as amended, (ESPP), based on estimated fair values within the applicable cost and expense lines identified below (in thousands):

	Three Months Ended
	June 30,
	2020		2019
Cost of product revenue	$	245	$	267
Cost of service revenue	1,350		1,467
Research and development	3,781		3,819
Sales and marketing	3,992		4,135
General and administrative	2,728		3,055
	$	12,096	$	12,743