DERIVATIVE FINANCIAL INSTRUMENTS Fair Value Derivative Instruments Table (Details) - Foreign Exchange Contract - USD ($) $ in Thousands	Sep. 30, 2018	Mar. 31, 2018
Foreign Currency Fair Value Hedge Derivative [Line Items]
Derivative financial instruments	$ 3,164	$ 718
Derivative Liability, Fair Value, Amount Offset Against Collateral	0	0
Derivative, Fair Value, Net	3,164	718
Designated as Hedging Instrument
Foreign Currency Fair Value Hedge Derivative [Line Items]
Derivative financial instruments	3,164	718
Not Designated as Hedging Instrument
Foreign Currency Fair Value Hedge Derivative [Line Items]
Derivative financial instruments	0	0
Prepaid expenses and other current assets
Foreign Currency Fair Value Hedge Derivative [Line Items]
Derivative financial instruments	3,164	718
Derivative Liability, Fair Value, Amount Offset Against Collateral	0	0
Derivative, Fair Value, Net	3,164	718
Prepaid expenses and other current assets \| Designated as Hedging Instrument
Foreign Currency Fair Value Hedge Derivative [Line Items]
Derivative financial instruments	3,164	718
Prepaid expenses and other current assets \| Not Designated as Hedging Instrument
Foreign Currency Fair Value Hedge Derivative [Line Items]
Derivative financial instruments	$ 0	$ 0

Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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Fair value, after effects of master netting arrangements, of financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset offset against the right to receive collateral. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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Fair value of the assets less the liabilities of a derivative or group of derivatives.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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