FOREIGN CURRENCY DERIVATIVES FOREIGN CURRENCY DERIVATIVES (Details 3) $ in Thousands, $ in Thousands, € in Millions, £ in Millions		12 Months Ended
	Jul. 30, 2018 USD ($)	Mar. 31, 2019 USD ($)	Mar. 31, 2018 USD ($)	Mar. 31, 2017 USD ($)	Mar. 31, 2019 EUR (€)	Mar. 31, 2019 MXN ($)	Mar. 31, 2019 GBP (£)	Mar. 31, 2018 EUR (€)	Mar. 31, 2018 MXN ($)	Mar. 31, 2018 GBP (£)
Derivative [Line Items]
Net (gains) losses reclassified into income for interest rate swap		$ (2,600)	$ 0	$ 0
Foreign currency swap contract
Derivative [Line Items]
Notional amount of cash flow hedge		$ 7,537				$ 149,700			$ 31,800
Option contracts
Derivative [Line Items]
Notional amount of cash flow hedge					€ 76.8		£ 25.8	€ 50.8		£ 15.6
Forward contracts
Derivative [Line Items]
Notional amount of cash flow hedge					€ 55.4		£ 18.0	€ 35.0		£ 10.7
Interest Rate Swap [Member]
Derivative [Line Items]
Term of contract	4 years
Notional amount of cash flow hedge	$ 831,000
Derivative, Fixed Interest Rate	2.78%