SHARE-BASED COMPENSATION (Tables)

9 Months Ended

Dec. 31, 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				Nine Months Ended
	December 31,				December 31,
	2019		2018		2019		2018
Cost of product revenue	$	231	$	375	$	843	$	1,188
Cost of service revenue	1,275		1,519		4,584		4,694
Research and development	3,437		3,979		12,076		13,544
Sales and marketing	3,910		4,649		13,333		15,051
General and administrative	2,508		3,237		9,125		9,665
	$	11,361	$	13,759	$	39,961	$	44,142