SHARE-BASED COMPENSATION (Tables)

9 Months Ended

Dec. 31, 2021

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 and performance-based restricted stock units granted pursuant to the Company's Amended 2007 Plan, the 2019 Plan, and the 2019 Amended 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				Nine Months Ended
	December 31,				December 31,
	2021		2020		2021		2020
Cost of product revenue	$	214	$	248	$	809	$	837
Cost of service revenue	1,302		1,371		4,822		4,531
Research and development	3,297		3,862		12,290		12,578
Sales and marketing	4,727		4,253		15,383		13,602
General and administrative	3,141		2,783		10,077		8,801
	$	12,681	$	12,517	$	43,381	$	40,349