ACCUMULATED OTHER COMPREHENSIVE INCOME (Details) - USD ($) $ in Thousands		Sep. 30, 2017	Mar. 31, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated unrealized gain (loss) on cash flow hedges	[1]	$ (3,039)	$ 529
Accumulated foreign currency translation adjustments		4,685	4,428
Accumulated unrealized gain (loss) on investments		(115)	(263)
Accumulated other comprehensive income		$ 1,531	$ 4,694

[1] Refer to Note 12, Foreign Currency Derivatives, which discloses the nature of the Company's derivative assets and liabilities as of March 31, 2017 and September 30, 2017.