GOODWILL AND INTANGIBLE ASSETS - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Mar. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Cost	$ 1,170,562	$ 1,168,106
Accumulated Amortization	(257,893)	(132,666)
Net	912,669	1,035,440
Developed technology
Finite-Lived Intangible Assets [Line Items]
Cost	254,005	253,249
Accumulated Amortization	(110,200)	(69,810)
Net	143,805	183,439
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Cost	831,731	834,091
Accumulated Amortization	(105,319)	(42,526)
Net	726,412	791,565
Distributor relationships
Finite-Lived Intangible Assets [Line Items]
Cost	8,290	5,348
Accumulated Amortization	(3,068)	(1,633)
Net	5,222	3,715
Definite lived trademark and tradenames
Finite-Lived Intangible Assets [Line Items]
Cost	43,817	43,964
Accumulated Amortization	(12,078)	(5,511)
Net	31,739	38,453
Core technology
Finite-Lived Intangible Assets [Line Items]
Cost	7,108	7,169
Accumulated Amortization	(6,009)	(4,659)
Net	1,099	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	278	288
Accumulated Amortization	(278)	(288)
Net	0	0
Leasehold interest
Finite-Lived Intangible Assets [Line Items]
Cost	2,600	2,600
Accumulated Amortization	(998)	(416)
Net	1,602	2,184
Backlog
Finite-Lived Intangible Assets [Line Items]
Cost	18,142	18,245
Accumulated Amortization	(18,133)	(6,750)
Net	9	11,495
Capitalized software
Finite-Lived Intangible Assets [Line Items]
Cost	3,047	1,625
Accumulated Amortization	(594)	0
Net	2,453	1,625
Other
Finite-Lived Intangible Assets [Line Items]
Cost	1,208	1,191
Accumulated Amortization	(880)	(737)
Net	$ 328	$ 454