SHARE-BASED COMPENSATION (Tables)

6 Months Ended

Sep. 30, 2019

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 granted pursuant to the Company's 2007 Equity Incentive Plan, as amended (Amended 2007 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				Six Months Ended
	September 30,				September 30,
	2019		2018		2019		2018
Cost of product revenue	$	345	$	544	$	612	$	813
Cost of service revenue	1,842		1,845		3,309		3,175
Research and development	4,820		5,414		8,639		9,565
Sales and marketing	5,288		6,043		9,423		10,402
General and administrative	3,562		3,572		6,617		6,428
	$	15,857	$	17,418	$	28,600	$	30,383