FAIR VALUE OF FINANCIAL INSTRUMENTS (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Dec. 31, 2017	Dec. 31, 2017	Mar. 31, 2017
Assets [Abstract]
Money market funds	$ 21,596	$ 21,596	$ 50,866
Liabilities [Abstract]
Contingent consideration	13,125	13,125	554
Adjustment to fair value of contingent consideration	700	12,600
Payments of contingent consideration		600
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets [Abstract]
Money market funds	21,596	21,596	50,866
Liabilities [Abstract]
Contingent consideration	0	0	0
Significant Other Observable Inputs (Level 2) [Member]
Assets [Abstract]
Money market funds	0	0	0
Liabilities [Abstract]
Contingent consideration	0	0	0
Significant Unobservable Inputs (Level 3) [Member]
Assets [Abstract]
Money market funds	0	0	0
Liabilities [Abstract]
Contingent consideration	$ 13,125	$ 13,125	$ 554