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	$ 919acts_DividendWithholdingTaxExpense	$ 3,589acts_DividendWithholdingTaxExpense	$ 3,189acts_DividendWithholdingTaxExpense
Valuation allowance	9,516us-gaap_OperatingLossCarryforwardsValuationAllowance	5,217us-gaap_OperatingLossCarryforwardsValuationAllowance	3,535us-gaap_OperatingLossCarryforwardsValuationAllowance
Tax savings from exemption and preferential tax status		930acts_TaxSavingsFromExemptionAndPreferentialTaxStatus	911acts_TaxSavingsFromExemptionAndPreferentialTaxStatus
Effect of tax savings on earnings per share		$ 0.002acts_EffectOfTaxSavingsOnEarningsPerShare	$ 0.002acts_EffectOfTaxSavingsOnEarningsPerShare
Tax loss carryforward expiring 2015 [Member]
Income Tax [Line Items]
Tax loss carryforwards	6,051us-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	3,818us-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	7,037us-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	7,930us-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	42,544us-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	7,836us-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	19,806us-gaap_OperatingLossCarryforwardsValuationAllowance / dei_LegalEntityAxis = acts_ShanghaiActionsSemiconductorCoLtdActionsSemiconductorShanghaiMember
Actions Semiconductor Co., Ltd. ("Actions Semiconductor Zhuhai") [Member]
Income Tax [Line Items]
Valuation allowance	8,653us-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	603us-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	9,271us-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	$ 7,836us-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

X

- Definition

Represents the amount of income tax provision is attributed to the dividend withholding tax.

+ References

No definition available.

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- Definition

Represents the percent of undistributed declared dividends subject to taxation.

+ References

No definition available.

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- Definition

Represents the effect on earnings per share derived from the tax savings.

+ References

No definition available.

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- Definition

The stated applicable tax rate for all resident enterprises.

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No definition available.

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- Definition

The stated applicable tax rate for all foreign enterprises.

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- Definition

Represents the applicable Hong Kong Profits Tax rate.

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- Definition

The percent reduction of applicable income tax rates due to a specified condition or qualification.

+ References

No definition available.

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- Definition

The tax savings during the reporting period resulting from tax exemption and/or preferential tax treatment.

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No definition available.

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- Definition

Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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- Definition

Expiration date of each operating loss carryforward included in operating loss carryforward, in CCYY-MM-DD format.

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- Definition

The portion of the valuation allowance pertaining to the deferred tax asset representing potential future taxable deductions from net operating loss carryforwards for which it is more likely than not that a tax benefit will not be realized.

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