INTANGIBLE ASSETS - Schedule of Amounts Allocated to Intangible Assets from Acquisitions (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Mar. 31, 2024
Finite-Lived Intangible Assets [Line Items]
Total intangible assets, gross	$ 156,048	$ 155,958
Total accumulated amortization	(129,059)	(121,375)
Total intangible assets, net	26,989	34,583
Developed technology, gross
Finite-Lived Intangible Assets [Line Items]
Total intangible assets, gross	102,156	102,076
Total accumulated amortization	(77,667)	(70,743)
Total intangible assets, net	24,489	31,333
Customer relationship/trade name, gross
Finite-Lived Intangible Assets [Line Items]
Total intangible assets, gross	37,892	37,882
Total accumulated amortization	(35,392)	(34,632)
Total intangible assets, net	2,500	3,250
Publisher/data supply relationships, gross
Finite-Lived Intangible Assets [Line Items]
Total intangible assets, gross	16,000	16,000
Total accumulated amortization	(16,000)	(16,000)
Total intangible assets, net	$ 0	$ 0