FOREIGN CURRENCY DERIVATIVES FOREIGN CURRENCY DERIVATIVES (Details 3)	Mar. 31, 2017 EUR (€)	Mar. 31, 2017 GBP (£)	Mar. 31, 2016 EUR (€)	Mar. 31, 2016 GBP (£)
Option contracts
Derivative [Line Items]
Notional amount of cash flow hedge	€ 73,500,000.0	£ 23,900,000.0	€ 59,400,000.0	£ 18,400,000.0
Forward contracts
Derivative [Line Items]
Notional amount of cash flow hedge	€ 11,200,000.0	£ 3,300,000.0	€ 23,900,000.0	£ 9,140,000.00