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INTANGIBLE ASSETS AND GOODWILL - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands | Mar. 31, 2017 | Mar. 31, 2016
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Finite-Lived Intangible Assets [Line Items] |  |
Gross Amount | $ 245,778 | $ 246,893
Accumulated Amortization | (245,502) | (246,442)
Net Amount | 276 | 451
Purchased technology |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Amount | 177,177 | 178,292
Accumulated Amortization | (176,901) | (177,841)
Net Amount | 276 | 451
Trademarks |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Amount | 3,900 | 3,900
Accumulated Amortization | (3,900) | (3,900)
Net Amount | 0 | 0
Customer lists |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Amount | 64,701 | 64,701
Accumulated Amortization | (64,701) | (64,701)
Net Amount | $ 0 | $ 0

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