Annual report pursuant to Section 13 and 15(d)

Income Taxes Income Taxes - Components of Income (Loss) Before Provision (Benefit) from Income Taxes (Details)

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Income Taxes Income Taxes - Components of Income (Loss) Before Provision (Benefit) from Income Taxes (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Schedule Of Income Before Income Tax Domestic And Foreign [Line Items]      
Domestic $ (9,631)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic $ (12,770)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic $ (11,918)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
Foreign 886us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign 439us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign (993)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign
Loss before income taxes $ (8,745)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments $ (12,331)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments $ (12,911)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments