REVENUE FROM CONTRACTS WITH CUSTOMERS: Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Revenues	$ 119,753	$ 102,217	$ 323,851	$ 274,871
Subscription
Disaggregation of Revenue [Line Items]
Revenues			262,130	221,847
Marketplace and Other
Disaggregation of Revenue [Line Items]
Revenues			61,721	53,024
United States
Disaggregation of Revenue [Line Items]
Revenues			303,893	255,895
Europe
Disaggregation of Revenue [Line Items]
Revenues			16,370	15,103
Asia-Pacific ("APAC")
Disaggregation of Revenue [Line Items]
Revenues			$ 3,588	$ 3,873