GOODWILL AND INTANGIBLE ASSETS - Schedule of Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Mar. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Cost	$ 80,349	$ 81,457
Accumulated Amortization	(46,480)	(41,544)
Net	33,869us-gaap_FiniteLivedIntangibleAssetsNet	39,913us-gaap_FiniteLivedIntangibleAssetsNet
Developed technology
Finite-Lived Intangible Assets [Line Items]
Cost	31,374	31,946
Accumulated Amortization	(25,201)	(23,524)
Net	6,173	8,422
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Cost	38,641	38,801
Accumulated Amortization	(16,240)	(14,046)
Net	22,401	24,755
Distributor relationships
Finite-Lived Intangible Assets [Line Items]
Cost	1,787	2,014
Accumulated Amortization	(727)	(568)
Net	1,060	1,446
Core technology
Finite-Lived Intangible Assets [Line Items]
Cost	7,331	7,572
Accumulated Amortization	(3,472)	(2,701)
Net	3,859	4,871
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Cost	315	355
Accumulated Amortization	(315)	(295)
Net	0	60
Other
Finite-Lived Intangible Assets [Line Items]
Cost	901	769
Accumulated Amortization	(525)	(410)
Net	$ 376	$ 359

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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