INTANGIBLE ASSETS AND GOODWILL - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 6,886	$ 8,842	$ 6,175
Fully amortized intangible asset written off		$ 11,300
Technology
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, remaining amortization period	4 years 4 months 24 days
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, remaining amortization period	5 years 2 months 12 days
Trade names and domains
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, remaining amortization period	0 years