GOODWILL AND INTANGIBLE ASSETS, NET (Amortization of Intangible Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Capitalized software development costs and licenses
Total amortization of intangible assets	$ 34,830	$ 6,816	$ 160
Cost of goods sold
Capitalized software development costs and licenses
Total amortization of intangible assets	19,719	4,252	160
Selling and marketing
Capitalized software development costs and licenses
Total amortization of intangible assets	8,107	1,497	0
Research and development
Capitalized software development costs and licenses
Total amortization of intangible assets	6,494	989	0
Depreciation and amortization
Capitalized software development costs and licenses
Total amortization of intangible assets	$ 510	$ 78	$ 0