INTANGIBLE ASSETS AND GOODWILL - Carrying Value of Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Mar. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 33,733	$ 46,917
Accumulated Amortization	(19,153)	(29,787)
Net Carrying Amount	14,580	17,130
Developed technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	27,225	33,960
Accumulated Amortization	(16,833)	(21,458)
Net Carrying Amount	10,392	12,502
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	6,426	11,969
Accumulated Amortization	(2,238)	(7,341)
Net Carrying Amount	4,188	4,628
Trade and domain names
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	82	988
Accumulated Amortization	(82)	(988)
Net Carrying Amount	$ 0	$ 0