INTANGIBLE ASSETS: - Amounts Allocated to Intangible Assets from Acquisitions (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	$ 167,436	$ 161,853
Accumulated amortization	(140,718)	(122,123)
Total finite-lived intangible assets, net	26,718	39,730
Developed technology, gross
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	84,146	78,547
Accumulated amortization	(67,980)	(60,424)
Total finite-lived intangible assets, net	16,166	18,123
Customer relationship/Trade name, gross
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	43,490	43,506
Accumulated amortization	(40,582)	(37,510)
Total finite-lived intangible assets, net	2,908	5,996
Publisher/Data supply relationships, gross
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	39,800	39,800
Accumulated amortization	(32,156)	(24,189)
Total finite-lived intangible assets, net	$ 7,644	$ 15,611