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DERIVATIVE FINANCIAL INSTRUMENTS (Detail Textuals) - Foreign exchange forward contracts - Designated as hedging instruments - Cash Flow Hedges
£ in Thousands, $ in Thousands
9 Months Ended
Dec. 31, 2018
USD ($)
Dec. 31, 2018
GBP (£)
Mar. 31, 2018
USD ($)
Mar. 31, 2018
GBP (£)
Derivatives, Fair Value [Line Items]        
Aggregate contracted notional outstanding amount $ 26,500 £ 375 $ 18,250 £ 1,155
Accumulated other comprehensive income (loss) expected to be reclassified, net of tax $ (102)      
Minimum        
Derivatives, Fair Value [Line Items]        
Outstanding forward contracts maturity 1 month      
Maximum        
Derivatives, Fair Value [Line Items]        
Outstanding forward contracts maturity 36 months