DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Summary of Notional Amounts and Fair Values of Derivative Instruments on Consolidated Balance Sheet (Details) - Forward contracts - USD ($) $ in Thousands	Sep. 30, 2020	Mar. 31, 2020
Prepaid Expenses and Other Current Assets
Derivatives, Fair Value [Line Items]
Prepaid Expenses and Other Current Assets	$ 151	$ 0
Accrued Other
Derivatives, Fair Value [Line Items]
Accrued Other	0	49
Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Notional Amounts	3,516	1,722
Designated as Hedging Instrument | Prepaid Expenses and Other Current Assets
Derivatives, Fair Value [Line Items]
Prepaid Expenses and Other Current Assets	105	0
Designated as Hedging Instrument | Accrued Other
Derivatives, Fair Value [Line Items]
Accrued Other	0	49
Designated as not hedging instrument
Derivatives, Fair Value [Line Items]
Notional Amounts	6,566	0
Designated as not hedging instrument | Prepaid Expenses and Other Current Assets
Derivatives, Fair Value [Line Items]
Prepaid Expenses and Other Current Assets	46	0
Designated as not hedging instrument | Accrued Other
Derivatives, Fair Value [Line Items]
Accrued Other	$ 0	$ 0