FOREIGN CURRENCY DERIVATIVES (Details) € in Thousands, £ in Thousands, $ in Thousands, $ in Thousands, $ in Thousands	12 Months Ended
	Mar. 31, 2019 USD ($)	Mar. 31, 2017 financial_institution	Mar. 31, 2019 EUR (€)	Mar. 31, 2019 MXN ($)	Mar. 31, 2019 GBP (£)	Mar. 31, 2019 AUD ($)	Mar. 31, 2018 EUR (€)	Mar. 31, 2018 MXN ($)	Mar. 31, 2018 GBP (£)
Derivative [Line Items]
Number of financial institutions the company has International Swap and Derivatives Association agreements		4
Foreign Exchange Forward, EURO
Derivative [Line Items]
Notional amount of non-designated hedge	$ 38,239		€ 34,000
Derivative, Currency Sold	Sell EUR
Derivative, Remaining Maturity	1 month
Foreign Exchange Forward, GBP
Derivative [Line Items]
Notional amount of non-designated hedge	$ 15,091				£ 11,600
Derivative, Currency Sold	Sell GBP
Derivative, Remaining Maturity	1 month
Foreign Exchange Forward, AUD
Derivative [Line Items]
Notional amount of non-designated hedge	$ 10,775					$ 15,200
Derivative, Currency Sold	Sell AUD
Derivative, Remaining Maturity	1 month
Option contracts
Derivative [Line Items]
Notional amount of non-designated hedge			76,800		25,800		€ 50,800		£ 15,600
Forward contracts
Derivative [Line Items]
Notional amount of non-designated hedge			€ 55,400		£ 18,000		€ 35,000		£ 10,700
Foreign currency swap contract
Derivative [Line Items]
Notional amount of non-designated hedge	$ 7,537			$ 149,700				$ 31,800
Derivative, Currency Bought	Buy MXN
Derivative, Remaining Maturity	9 months
Minimum | Options
Derivative [Line Items]
Term of contract		6 months
Maximum | Options
Derivative [Line Items]
Term of contract		12 months
Cash flow hedge | Forwards
Derivative [Line Items]
Term of contract		3 months