DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Summary of Notional Amounts and Fair Values of Derivative Instruments on Consolidated Balance Sheet (Details) - Forward contracts - Cash flow hedges - Designated as hedging instrument - USD ($) $ in Thousands	Sep. 30, 2019	Mar. 31, 2019
Derivatives, Fair Value [Line Items]
Notional Amounts	$ 9,965	$ 4,550
Prepaid Expenses and Other Current Assets
Derivatives, Fair Value [Line Items]
Prepaid Expenses and Other Current Assets	37	58
Accrued Other
Derivatives, Fair Value [Line Items]
Accrued Other	$ 35	$ 68