INTANGIBLE ASSETS AND GOODWILL - Schedule of Intangible Amortization (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Intangible amortization	$ 280	$ 3,697	$ 8,902
Purchased technology
Finite-Lived Intangible Assets [Line Items]
Intangible amortization	280	913	1,476
Customer lists
Finite-Lived Intangible Assets [Line Items]
Intangible amortization	$ 0	$ 2,784	$ 7,426