INTANGIBLE ASSETS - Summary of carrying value of intangible assets (Details) - USD ($) $ in Thousands |
Sep. 30, 2016 |
Mar. 31, 2016 |
|---|---|---|
| Finite-Lived Intangible Assets [Line Items] | ||
| Gross Amount | $ 246,893 | $ 246,893 |
| Accumulated Amortization | (246,538) | (246,442) |
| Net Amount | 355 | 451 |
| Purchased technology | ||
| Finite-Lived Intangible Assets [Line Items] | ||
| Gross Amount | 178,292 | 178,292 |
| Accumulated Amortization | (177,937) | (177,841) |
| Net Amount | 355 | 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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- Definition 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
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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