DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Summary of Effect of Foreign Exchange Forward Contracts on Other Comprehensive Income And Results Of Operations (Details) - Forward contracts - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in OCI on Derivative	$ 274	$ (103)
Gain (Loss) Reclassified from Accumulated OCI into Income	(309)	28
Gain Recognized in Income	115	0
Research and development
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in OCI on Derivative	274	(103)
Gain (Loss) Reclassified from Accumulated OCI into Income	(57)	(19)
Sales and marketing
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Reclassified from Accumulated OCI into Income	(252)	47
General and administrative
Derivative Instruments, Gain (Loss) [Line Items]
Gain Recognized in Income	$ 115	$ 0