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	3 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Derivative Instruments, Gain (Loss) [Line Items]
Gain Recognized in OCI on Derivative	$ 169	$ 11
Gain (Loss) Reclassified from Accumulated OCI into Income	(105)	42
Loss on derivative	(248)	0
Research and development
Derivative Instruments, Gain (Loss) [Line Items]
Gain Recognized in OCI on Derivative	169	11
Gain (Loss) Reclassified from Accumulated OCI into Income	(8)	8
Sales and marketing
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Reclassified from Accumulated OCI into Income	(97)	34
General and administrative
Derivative Instruments, Gain (Loss) [Line Items]
Loss on derivative	$ (248)	$ 0