INTANGIBLE ASSETS: - Amounts Allocated to Intangible Assets from Acquisitions (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Mar. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	$ 167,362	$ 167,436
Accumulated amortization	(145,312)	(140,718)
Total finite-lived intangible assets, net	22,050	26,718
Developed technology, gross
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	84,089	84,146
Accumulated amortization	(69,875)	(67,980)
Total finite-lived intangible assets, net	14,214	16,166
Customer relationship/Trade name, gross
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	43,473	43,490
Accumulated amortization	(41,290)	(40,582)
Total finite-lived intangible assets, net	2,183	2,908
Publisher/Data supply relationships, gross
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	39,800	39,800
Accumulated amortization	(34,147)	(32,156)
Total finite-lived intangible assets, net	$ 5,653	$ 7,644