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REVISION OF PRIOR PERIOD FINANCIAL STATEMENTS (Narrative) (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended | 3 Months Ended | 12 Months Ended
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Mar. 31, 2013 Cumulative Overstatement of Revenue and Accounts Receivable [Member] | Mar. 31, 2013 Overstatement (Understatement) of Revenue [Member] | Mar. 31, 2012 Overstatement (Understatement) of Revenue [Member] | Mar. 31, 2011 Overstatement (Understatement) of Revenue [Member] | Mar. 31, 2013 (Understatement) of Accrual of Sales Commission Expense [Member] | Jun. 30, 2013 Reduction in Net Income [Member] | Mar. 31, 2010 Overstatement of DXi OEM Software Revenue [Member] | Mar. 31, 2011 (Understatement) of Royalty Revenue [Member] | Mar. 31, 2013 (Understatement) of Payroll Tax Expense on Commissions [Member] | Mar. 31, 2012 (Understatement) of Payroll Tax Expense on Commissions [Member] | Mar. 31, 2011 (Understatement) of Payroll Tax Expense on Commissions [Member]
Error Corrections And Prior Period Adjustments Revisions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Amount of error | $ 1.5 | $ 0.1 | $ (0.1) | $ 0.1 | $ (0.7) | $ (2.2) | $ 0.7 | $ (0.5) | $ (0.9) | $ (0.3) | $ (0.6)

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- Definition Amount of each individual error being corrected in the correcting adjustment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 1.N.Q3) -URI http://asc.fasb.org/extlink&oid=26874127&loc=d3e30840-122693 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 1 -Section N + Details
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