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CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified | 12 Months Ended
--- | ---
Mar. 31, 2015 | Mar. 31, 2014 | Mar. 31, 2013
Condensed Consolidated Statements Of Income |  |  |
Service revenue | $ 148,208 us-gaap_SalesRevenueServicesGross | $ 116,607 us-gaap_SalesRevenueServicesGross | $ 94,384 us-gaap_SalesRevenueServicesGross
Product revenue | 14,205 us-gaap_SalesRevenueGoodsNet | 11,990 us-gaap_SalesRevenueGoodsNet | 9,402 us-gaap_SalesRevenueGoodsNet
Total revenue | 162,413 us-gaap_Revenues | 128,597 us-gaap_Revenues | 103,786 us-gaap_Revenues
Operating expenses: |  |  |
Cost of service revenue | 29,701 us-gaap_CostOfServices | 22,445 us-gaap_CostOfServices | 19,928 us-gaap_CostOfServices
Cost of product revenue | 15,863 us-gaap_CostOfGoodsSold | 15,170 us-gaap_CostOfGoodsSold | 11,801 us-gaap_CostOfGoodsSold
Research and development | 15,118 us-gaap_ResearchAndDevelopmentExpense | 11,633 us-gaap_ResearchAndDevelopmentExpense | 8,147 us-gaap_ResearchAndDevelopmentExpense
Sales and marketing | 80,667 us-gaap_SellingAndMarketingExpense | 60,906 us-gaap_SellingAndMarketingExpense | 45,573 us-gaap_SellingAndMarketingExpense
General and administrative | 18,182 us-gaap_GeneralAndAdministrativeExpense | 15,368 us-gaap_GeneralAndAdministrativeExpense | 8,558 us-gaap_GeneralAndAdministrativeExpense
Gain on patent sale | (1,000)us-gaap_GainLossOnSaleOfOtherAssets | 0 us-gaap_GainLossOnSaleOfOtherAssets | (12,965)us-gaap_GainLossOnSaleOfOtherAssets
Total operating expenses | 158,531 us-gaap_OperatingExpenses | 125,522 us-gaap_OperatingExpenses | 81,042 us-gaap_OperatingExpenses
Income from operations | 3,882 us-gaap_OperatingIncomeLoss | 3,075 us-gaap_OperatingIncomeLoss | 22,744 us-gaap_OperatingIncomeLoss
Other income, net | 833 us-gaap_NonoperatingIncomeExpense | 742 us-gaap_NonoperatingIncomeExpense | 105 us-gaap_NonoperatingIncomeExpense
Income from continuing operations before provision for income taxes | 4,715 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | 3,817 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | 22,849 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Provision for income taxes | 2,789 us-gaap_IncomeTaxExpenseBenefit | 2,219 us-gaap_IncomeTaxExpenseBenefit | 9,399 us-gaap_IncomeTaxExpenseBenefit
Income from continuing operations | 1,926 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | 1,598 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | 13,450 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
Income from discontinued operations, net of income tax provision | 0 us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax | 320 us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax | 489 us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax
Gain on disposal of discontinued operations, net of income tax provision of $456 | 0 us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax | 596 us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax | 0 us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax
Net income | $ 1,926 us-gaap_NetIncomeLoss | $ 2,514 us-gaap_NetIncomeLoss | $ 13,939 us-gaap_NetIncomeLoss
Income per share - continuing operations: |  |  |
Basic | $ 0.02 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare | $ 0.02 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare | $ 0.19 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare
Diluted | $ 0.02 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare | $ 0.02 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare | $ 0.18 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare
Income per share - discontinued operations: |  |  |
Basic | $ 0.00 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare | $ 0.01 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare | $ 0.01 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare
Diluted | $ 0.00 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare | $ 0.01 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare | $ 0.01 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare
Net income per share: |  |  |
Basic | $ 0.02 us-gaap_EarningsPerShareBasic | $ 0.03 us-gaap_EarningsPerShareBasic | $ 0.20 us-gaap_EarningsPerShareBasic
Diluted | $ 0.02 us-gaap_EarningsPerShareDiluted | $ 0.03 us-gaap_EarningsPerShareDiluted | $ 0.19 us-gaap_EarningsPerShareDiluted
Weighted average number of shares: |  |  |
Basic | 89,071 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 78,310 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 71,390 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Diluted | 91,652 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 81,658 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 74,700 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding

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