INTANGIBLE ASSETS - Amounts Allocated to Intangible Assets from Acquisitions (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Mar. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	$ 167,335	$ 167,436
Accumulated amortization	(154,132)	(140,718)
Total finite-lived intangible assets, net	13,203	26,718
Developed technology, gross
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	84,055	84,146
Accumulated amortization	(73,691)	(67,980)
Total finite-lived intangible assets, net	10,364	16,166
Customer relationship/trade name, gross
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	43,480	43,490
Accumulated amortization	(42,641)	(40,582)
Total finite-lived intangible assets, net	839	2,908
Publisher/data supply relationships, gross
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	39,800	39,800
Accumulated amortization	(37,800)	(32,156)
Total finite-lived intangible assets, net	$ 2,000	$ 7,644