REVENUE RECOGNITION - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Dec. 31, 2018	Dec. 31, 2018	Apr. 01, 2018
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract with customer, revenue recognized	$ 2.3	$ 5.5
Subscription term		24 months
Remaining performance obligation, amount	$ 160.0	$ 160.0
Minimum
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Subscription term		1 year
Maximum
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Subscription term		4 years
Accounting Standards Update 2014-09
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Deferred commission costs, amortization period			5 years