INTANGIBLE ASSETS - Amounts Allocated to Intangible Assets from Acquisitions (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Mar. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	$ 122,479	$ 167,436
Accumulated amortization	(112,611)	(140,718)
Total finite-lived intangible assets, net	9,868	26,718
Developed technology, gross
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	72,095	84,146
Accumulated amortization	(63,658)	(67,980)
Total finite-lived intangible assets, net	8,437	16,166
Customer relationship/trade name, gross
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	34,384	43,490
Accumulated amortization	(33,953)	(40,582)
Total finite-lived intangible assets, net	431	2,908
Publisher/data supply relationships, gross
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	16,000	39,800
Accumulated amortization	(15,000)	(32,156)
Total finite-lived intangible assets, net	$ 1,000	$ 7,644