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Consolidated Statements of Operations (USD $)
In Thousands, except Share data, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Revenues $ 143,036us-gaap_Revenues $ 151,063us-gaap_Revenues $ 162,790us-gaap_Revenues
Costs of revenues (1) 85,992us-gaap_CostOfRevenue [1] 91,237us-gaap_CostOfRevenue [1] 101,660us-gaap_CostOfRevenue [1]
Gross profit 57,044us-gaap_GrossProfit 59,826us-gaap_GrossProfit 61,130us-gaap_GrossProfit
Operating expenses:      
Research and development, net (2) 33,468us-gaap_ResearchAndDevelopmentExpense [2] 35,000us-gaap_ResearchAndDevelopmentExpense [2] 42,539us-gaap_ResearchAndDevelopmentExpense [2]
Sales and marketing (3) 11,905us-gaap_SellingAndMarketingExpense [3] 11,273us-gaap_SellingAndMarketingExpense [3] 14,237us-gaap_SellingAndMarketingExpense [3]
General and administrative (4) 10,541us-gaap_GeneralAndAdministrativeExpense [4] 11,812us-gaap_GeneralAndAdministrativeExpense [4] 10,638us-gaap_GeneralAndAdministrativeExpense [4]
Amortization of intangible assets 1,573us-gaap_AmortizationOfIntangibleAssets 1,672us-gaap_AmortizationOfIntangibleAssets 2,310us-gaap_AmortizationOfIntangibleAssets
Restructuring expenses     2,008us-gaap_RestructuringCharges
Total operating expenses 57,487us-gaap_OperatingExpenses 59,757us-gaap_OperatingExpenses 71,732us-gaap_OperatingExpenses
Operating income (loss) (443)us-gaap_OperatingIncomeLoss 69us-gaap_OperatingIncomeLoss (10,602)us-gaap_OperatingIncomeLoss
Financial income, net (Note 12) 1,204us-gaap_NonoperatingIncomeExpense 2,457us-gaap_NonoperatingIncomeExpense 2,388us-gaap_NonoperatingIncomeExpense
Income (loss) before income tax benefit 761us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments 2,526us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments (8,214)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
Income tax benefit 2,841us-gaap_IncomeTaxExpenseBenefit 150us-gaap_IncomeTaxExpenseBenefit 172us-gaap_IncomeTaxExpenseBenefit
Net income (loss) $ 3,602us-gaap_NetIncomeLoss $ 2,676us-gaap_NetIncomeLoss $ (8,042)us-gaap_NetIncomeLoss
Net income (loss) per share:      
Basic (in Dollars per share) $ 0.16us-gaap_EarningsPerShareBasic $ 0.12us-gaap_EarningsPerShareBasic $ (0.37)us-gaap_EarningsPerShareBasic
Diluted (in Dollars per share) $ 0.16us-gaap_EarningsPerShareDiluted $ 0.12us-gaap_EarningsPerShareDiluted $ (0.37)us-gaap_EarningsPerShareDiluted
Weighted average number of shares used in per share computations of:      
Basic net income (loss) per share (in Shares) 21,968us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 22,249us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 21,950us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Diluted net income (loss) per share (in Shares) 22,954us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 22,906us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 21,950us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
[1] Includes equity-based compensation expense in the amount of $300, $253 and $330 for the years ended December 31, 2014, 2013 and 2012, respectively.
[2] Includes equity-based compensation expense in the amount of $2,381, $1,873 and $2,425 for the years ended December 31, 2014, 2013 and 2012, respectively.
[3] Includes equity-based compensation expense in the amount of $621, $478 and $778 for the years ended December 31, 2014, 2013 and 2012, respectively.
[4] Includes equity-based compensation expense in the amount of $2,057, $1,555 and $1,450 for the years ended December 31, 2014, 2013 and 2012, respectively.