GOODWILL AND INTANGIBLE ASSETS - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Mar. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Cost	$ 1,169,159	$ 1,168,106
Accumulated Amortization	(163,791)	(132,666)
Net	1,005,368	1,035,440
Developed technology
Finite-Lived Intangible Assets [Line Items]
Cost	253,036	253,249
Accumulated Amortization	(79,949)	(69,810)
Net	173,087	183,439
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Cost	833,129	834,091
Accumulated Amortization	(58,248)	(42,526)
Net	774,881	791,565
Distributor relationships
Finite-Lived Intangible Assets [Line Items]
Cost	7,364	5,348
Accumulated Amortization	(1,927)	(1,633)
Net	5,437	3,715
Definite lived trademark and trade names
Finite-Lived Intangible Assets [Line Items]
Cost	43,922	43,964
Accumulated Amortization	(7,156)	(5,511)
Net	36,766	38,453
Core technology
Finite-Lived Intangible Assets [Line Items]
Cost	7,152	7,169
Accumulated Amortization	(4,866)	(4,659)
Net	2,286	2,510
Net beneficial leases
Finite-Lived Intangible Assets [Line Items]
Cost	336	336
Accumulated Amortization	(336)	(336)
Net	0	0
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Cost	285	288
Accumulated Amortization	(285)	(288)
Net	0	0
Leasehold interest
Finite-Lived Intangible Assets [Line Items]
Cost	2,600	2,600
Accumulated Amortization	(562)	(416)
Net	2,038	2,184
Backlog
Finite-Lived Intangible Assets [Line Items]
Cost	18,216	18,245
Accumulated Amortization	(9,610)	(6,750)
Net	8,606	11,495
Capitalized Software
Finite-Lived Intangible Assets [Line Items]
Cost	1,915	1,625
Accumulated Amortization	(62)	0
Net	1,853	1,625
Other
Finite-Lived Intangible Assets [Line Items]
Cost	1,204	1,191
Accumulated Amortization	(790)	(737)
Net	$ 414	$ 454