ACCUMULATED OTHER COMPREHENSIVE INCOME (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Mar. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss)	$ (475)	$ 2,870
Accumulated unrealized gain (loss) on cash flow hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated unrealized gain (loss) on cash flow hedges	(5,310)	(1,663)
Accumulated foreign currency translation adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated foreign currency translation adjustments	4,835	4,685
Accumulated unrealized gain on investments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated unrealized loss on investments	0	(152)
Accumulated other comprehensive income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss)	$ (475)	$ 2,870