ACCUMULATED OTHER COMPREHENSIVE INCOME (Details) - USD ($) $ in Thousands		Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' equity		$ 312,399	$ 727,397	$ 698,664	$ 646,447
Accumulated unrealized gain (loss) on cash flow hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' equity	[1]	(1,087)	5,593
Accumulated foreign currency translation adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' equity		4,739	4,363
Accumulated unrealized gain on investments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' equity		107	164
Accumulated other comprehensive income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' equity		$ 3,759	$ 10,120	$ 2,638	$ 5,567

[1] Refer to Note 15, Foreign Currency Derivatives, which discloses the nature of the Company's derivative assets and liabilities as of March 31, 2016 and March 31, 2015.