v2.4.1.9

INCOME TAXES (Narrative) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009 | Dec. 31, 2008
Income Tax [Line Items] |  |  |  |  |  |  |
Enterprise income tax rate | 25.00%acts_EnterpriseIncomeTaxRate |  |  |  |  |  |
Foreign enterprise income tax rate | 25.00%acts_ForeignEnterpriseIncomeTaxRate |  |  |  |  |  |
Dividend withholding tax rate | 10.00%acts_DividendWithholdingTaxRate | 5.00%acts_DividendWithholdingTaxRate | 5.00%acts_DividendWithholdingTaxRate |  |  |  |
Dividend withholding tax expense | $ 919 acts_DividendWithholdingTaxExpense | $ 3,589 acts_DividendWithholdingTaxExpense | $ 3,189 acts_DividendWithholdingTaxExpense |  |  |  |
Valuation allowance | 9,516 us-gaap_OperatingLossCarryforwardsValuationAllowance | 5,217 us-gaap_OperatingLossCarryforwardsValuationAllowance | 3,535 us-gaap_OperatingLossCarryforwardsValuationAllowance |  |  |  |
Tax savings from exemption and preferential tax status |  | 930 acts_TaxSavingsFromExemptionAndPreferentialTaxStatus | 911 acts_TaxSavingsFromExemptionAndPreferentialTaxStatus |  |  |  |
Effect of tax savings on earnings per share |  | $ 0.002 acts_EffectOfTaxSavingsOnEarningsPerShare | $ 0.002 acts_EffectOfTaxSavingsOnEarningsPerShare |  |  |  |
Tax loss carryforward expiring 2015 [Member] |  |  |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |  |  |
Tax loss carryforwards | 6,051 us-gaap_OperatingLossCarryforwards / us-gaap_TaxCreditCarryforwardAxis = acts_TaxCarryforwardOneMember |  |  |  |  |  |
Tax loss carryforward expiration year | Jan. 01, 2015 |  |  |  |  |  |
Tax loss carryforward expiring 2016 [Member] |  |  |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |  |  |
Tax loss carryforwards | 3,818 us-gaap_OperatingLossCarryforwards / us-gaap_TaxCreditCarryforwardAxis = acts_TaxCarryforwardTwoMember |  |  |  |  |  |
Tax loss carryforward expiration year | Jan. 01, 2016 |  |  |  |  |  |
Tax loss carryforward expiring 2017 [Member] |  |  |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |  |  |
Tax loss carryforwards | 7,037 us-gaap_OperatingLossCarryforwards / us-gaap_TaxCreditCarryforwardAxis = acts_TaxCarryforwardThreeMember |  |  |  |  |  |
Tax loss carryforward expiration year | Jan. 01, 2017 |  |  |  |  |  |
Tax loss carryforward expiring 2018 [Member] |  |  |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |  |  |
Tax loss carryforwards | 7,930 us-gaap_OperatingLossCarryforwards / us-gaap_TaxCreditCarryforwardAxis = acts_TaxCarryforwardFourMember |  |  |  |  |  |
Tax loss carryforward expiration year | Jan. 01, 2018 |  |  |  |  |  |
Tax loss carryforward expiring 2019 [Member] |  |  |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |  |  |
Tax loss carryforwards | 42,544 us-gaap_OperatingLossCarryforwards / us-gaap_TaxCreditCarryforwardAxis = acts_TaxCarryforwardSixMember |  |  |  |  |  |
Tax loss carryforward expiration year | Jan. 01, 2019 |  |  |  |  |  |
Tax loss carryforward, indefinite life [Member] |  |  |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |  |  |
Tax loss carryforwards | 7,836 us-gaap_OperatingLossCarryforwards / us-gaap_TaxCreditCarryforwardAxis = acts_TaxCarryforwardFiveMember |  |  |  |  |  |
High New Tech Enterprise [Member] |  |  |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |  |  |
Enterprise income tax rate | 15.00%acts_EnterpriseIncomeTaxRate / us-gaap_StatementScenarioAxis = acts_TaxScenarioOneMember |  |  |  |  |  |
Current Preferential Tax Rate [Member] |  |  |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |  |  |
Enterprise income tax rate | 15.00%acts_EnterpriseIncomeTaxRate / us-gaap_StatementScenarioAxis = acts_TaxScenarioTwoMember |  | 25.00%acts_EnterpriseIncomeTaxRate / us-gaap_StatementScenarioAxis = acts_TaxScenarioTwoMember | 24.00%acts_EnterpriseIncomeTaxRate / us-gaap_StatementScenarioAxis = acts_TaxScenarioTwoMember | 22.00%acts_EnterpriseIncomeTaxRate / us-gaap_StatementScenarioAxis = acts_TaxScenarioTwoMember | 20.00%acts_EnterpriseIncomeTaxRate / us-gaap_StatementScenarioAxis = acts_TaxScenarioTwoMember | 18.00%acts_EnterpriseIncomeTaxRate / us-gaap_StatementScenarioAxis = acts_TaxScenarioTwoMember
Shanghai Actions Semiconductor Co., Ltd. ("Actions Semiconductor Shanghai ") [Member] |  |  |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |  |  |
Valuation allowance | 19,806 us-gaap_OperatingLossCarryforwardsValuationAllowance / dei_LegalEntityAxis = acts_ShanghaiActionsSemiconductorCoLtdActionsSemiconductorShanghaiMember |  |  |  |  |  |
Actions Semiconductor Co., Ltd. ("Actions Semiconductor Zhuhai") [Member] |  |  |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |  |  |
Valuation allowance | 8,653 us-gaap_OperatingLossCarryforwardsValuationAllowance / dei_LegalEntityAxis = acts_ActionsSemiconductorCoLtdActionsSemiconductorZhuhaiMember |  |  |  |  |  |
Actions Semiconductor Co., Ltd. ("Actions Semiconductor Zhuhai") [Member] | High New Tech Enterprise [Member] |  |  |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |  |  |
Enterprise income tax rate | 10.00%acts_EnterpriseIncomeTaxRate / dei_LegalEntityAxis = acts_ActionsSemiconductorCoLtdActionsSemiconductorZhuhaiMember / us-gaap_StatementScenarioAxis = acts_TaxScenarioOneMember | 10.00%acts_EnterpriseIncomeTaxRate / dei_LegalEntityAxis = acts_ActionsSemiconductorCoLtdActionsSemiconductorZhuhaiMember / us-gaap_StatementScenarioAxis = acts_TaxScenarioOneMember | 15.00%acts_EnterpriseIncomeTaxRate / dei_LegalEntityAxis = acts_ActionsSemiconductorCoLtdActionsSemiconductorZhuhaiMember / us-gaap_StatementScenarioAxis = acts_TaxScenarioOneMember | 15.00%acts_EnterpriseIncomeTaxRate / dei_LegalEntityAxis = acts_ActionsSemiconductorCoLtdActionsSemiconductorZhuhaiMember / us-gaap_StatementScenarioAxis = acts_TaxScenarioOneMember |  |  |
Artek Microelectronics Co., Ltd. ("Artek Microelectronics Shenzhen") [Member] |  |  |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |  |  |
Valuation allowance | 603 us-gaap_OperatingLossCarryforwardsValuationAllowance / dei_LegalEntityAxis = acts_ArtekMicroelectronicsCoLtdArtekMicroelectronicsShenzhenMember |  |  |  |  |  |
Artek Microelectronics Co., Ltd. ("Artek Microelectronics Shenzhen") [Member] | High New Tech Enterprise [Member] |  |  |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |  |  |
Foreign enterprise income tax rate | 25.00%acts_ForeignEnterpriseIncomeTaxRate / dei_LegalEntityAxis = acts_ArtekMicroelectronicsCoLtdArtekMicroelectronicsShenzhenMember / us-gaap_StatementScenarioAxis = acts_TaxScenarioOneMember |  |  |  |  |  |
Artek Microelectronics Co., Ltd. ("Artek Microelectronics Shenzhen") [Member] | Current Preferential Tax Rate [Member] |  |  |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |  |  |
Income tax rate reduction, percentage |  |  |  | 50.00%acts_IncomeTaxRateReductionPercent / dei_LegalEntityAxis = acts_ArtekMicroelectronicsCoLtdArtekMicroelectronicsShenzhenMember / us-gaap_StatementScenarioAxis = acts_TaxScenarioTwoMember | 50.00%acts_IncomeTaxRateReductionPercent / dei_LegalEntityAxis = acts_ArtekMicroelectronicsCoLtdArtekMicroelectronicsShenzhenMember / us-gaap_StatementScenarioAxis = acts_TaxScenarioTwoMember |  |
Actions (Zhuhai) Technology Co., Ltd. ("Actions Technology Zhuhai") [Member] |  |  |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |  |  |
Valuation allowance | 9,271 us-gaap_OperatingLossCarryforwardsValuationAllowance / dei_LegalEntityAxis = acts_ActionsZhuhaiTechnologyCoLtdMember |  |  |  |  |  |
Actions Technology (HK) Company Limited ("Actions Hong Kong") [Member] |  |  |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |  |  |
Hong Kong profits tax rate | 16.50%acts_HongKongProfitsTaxRate / dei_LegalEntityAxis = acts_ActionsTechnologyHkCompanyLimitedActionsHongKongMember | 16.50%acts_HongKongProfitsTaxRate / dei_LegalEntityAxis = acts_ActionsTechnologyHkCompanyLimitedActionsHongKongMember | 16.50%acts_HongKongProfitsTaxRate / dei_LegalEntityAxis = acts_ActionsTechnologyHkCompanyLimitedActionsHongKongMember |  |  |  |
Valuation allowance | $ 7,836 us-gaap_OperatingLossCarryforwardsValuationAllowance / dei_LegalEntityAxis = acts_ActionsTechnologyHkCompanyLimitedActionsHongKongMember |  |  |  |  |  |
Artek Microelectronics (HK) Co., Limited [Member] |  |  |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |  |  |
Hong Kong profits tax rate | 16.50%acts_HongKongProfitsTaxRate / dei_LegalEntityAxis = acts_ArtekMicroelectronicsHkCoLimitedMember | 16.50%acts_HongKongProfitsTaxRate / dei_LegalEntityAxis = acts_ArtekMicroelectronicsHkCoLimitedMember | 16.50%acts_HongKongProfitsTaxRate / dei_LegalEntityAxis = acts_ArtekMicroelectronicsHkCoLimitedMember |  |  |  |

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