ACQUISITIONS - NARRATIVE (Details) - USD ($)		12 Months Ended
	Jan. 31, 2017	Mar. 31, 2019	Mar. 31, 2018		Mar. 31, 2017	[1]	Mar. 31, 2016
Business Acquisition [Line Items]
Cash		$ 28,149,000	$ 9,401,000	[1]	$ 130,669,000
Issuance of common stock in connection with acquisition (in shares)	1,480,168
Goodwill		381,717,000	399,530,000				$ 359,115,000
Goodwill increase		3,149,000	$ 6,236,000
Social Point
Business Acquisition [Line Items]
Cash	$ 175,000,000
Contingent earn out, cash and stock	$ 25,900,000
Deferred acquisition payments paid		25,000
Required minimum employment period	3 years
Consideration transferred	$ 238,736,000
Goodwill	143,566,000
Intangible assets	111,550,000
Tangible assets, net of liabilities assumed	$ (16,380,000)
Goodwill increase		$ 4,245,000

[1] Prior period amounts have been adjusted retrospectively to reflect the adoption of ASU 2016-18, Statement of Cash Flows (Topic 230): RestrictedCash. Refer to Note 1 for further discussion.