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INTANGIBLE ASSETS AND GOODWILL (Schedule of Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified | Jun. 30, 2013 | Mar. 31, 2013
--- | --- | ---
Intangible Assets Excluding Goodwill [Line Items] |  |
Gross Amount | $ 290,390 | $ 290,390
Accumulated Amortization | (279,801) | (277,577)
Net Amount | 10,589 | 12,813
Purchased technology [Member] |  |
Intangible Assets Excluding Goodwill [Line Items] |  |
Gross Amount | 180,613 | 180,613
Accumulated Amortization | (178,536) | (178,168)
Net Amount | 2,077 | 2,445
Trademarks [Member] |  |
Intangible Assets Excluding Goodwill [Line Items] |  |
Gross Amount | 3,900 | 3,900
Accumulated Amortization | (3,900) | (3,900)
Net Amount |  |
Customer lists [Member] |  |
Intangible Assets Excluding Goodwill [Line Items] |  |
Gross Amount | 105,719 | 105,719
Accumulated Amortization | (97,365) | (95,509)
Net Amount | 8,354 | 10,210
In-process research and development [Member] |  |
Intangible Assets Excluding Goodwill [Line Items] |  |
Gross Amount | 158 | 158
Accumulated Amortization |  |
Net Amount | $ 158 | $ 158

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite or infinite life. + References No definition available. + Details
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- Definition Amount before accumulated amortization of intangible assets, excluding goodwill. + References No definition available. + Details
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- Definition Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph ((a)(1),(b)) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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