v2.4.1.9

ORGANIZATION AND PRINCIPAL ACTIVITIES (Details)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Actions Semiconductor Co., Ltd. ("Actions Semiconductor Mauritius") [Member]
Business Acquisition [Line Items]
Percentage of ownership	100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / dei_LegalEntityAxis = acts_ActionsSemiconductorCoLtdActionsSemiconductorMauritiusMember	100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / dei_LegalEntityAxis = acts_ActionsSemiconductorCoLtdActionsSemiconductorMauritiusMember
Actions Semiconductor Co., Ltd. ("Actions Semiconductor Zhuhai") [Member]
Business Acquisition [Line Items]
Percentage of ownership	100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / dei_LegalEntityAxis = acts_ActionsSemiconductorCoLtdActionsSemiconductorZhuhaiMember	100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / dei_LegalEntityAxis = acts_ActionsSemiconductorCoLtdActionsSemiconductorZhuhaiMember
Actions (Zhuhai) Microelectronics Co., Ltd. [Member]
Business Acquisition [Line Items]
Percentage of ownership	100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / dei_LegalEntityAxis = acts_ActionsZhuhaiMicroelectronicsCoLtdMember	100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / dei_LegalEntityAxis = acts_ActionsZhuhaiMicroelectronicsCoLtdMember
Actions (Zhuhai) Technology Co., Ltd. ("Actions Technology Zhuhai") [Member]
Business Acquisition [Line Items]
Percentage of ownership	100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / dei_LegalEntityAxis = acts_ActionsZhuhaiTechnologyCoLtdMember	100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / dei_LegalEntityAxis = acts_ActionsZhuhaiTechnologyCoLtdMember
Shanghai Actions Semiconductor Co., Ltd. ("Actions Semiconductor Shanghai ") [Member]
Business Acquisition [Line Items]
Percentage of ownership	100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / dei_LegalEntityAxis = acts_ShanghaiActionsSemiconductorCoLtdActionsSemiconductorShanghaiMember	100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / dei_LegalEntityAxis = acts_ShanghaiActionsSemiconductorCoLtdActionsSemiconductorShanghaiMember
Actions Technology (HK) Company Limited ("Actions Hong Kong") [Member]
Business Acquisition [Line Items]
Percentage of ownership	100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / dei_LegalEntityAxis = acts_ActionsTechnologyHkCompanyLimitedActionsHongKongMember	100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / dei_LegalEntityAxis = acts_ActionsTechnologyHkCompanyLimitedActionsHongKongMember
Actions Microelectronics Co., Ltd. [Member]
Business Acquisition [Line Items]
Percentage of ownership	100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / dei_LegalEntityAxis = acts_ActionsMicroelectronicsCoLtdMember	100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / dei_LegalEntityAxis = acts_ActionsMicroelectronicsCoLtdMember
Artek Microelectronics (HK) Co., Limited [Member]
Business Acquisition [Line Items]
Percentage of ownership	100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / dei_LegalEntityAxis = acts_ArtekMicroelectronicsHkCoLimitedMember	100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / dei_LegalEntityAxis = acts_ArtekMicroelectronicsHkCoLimitedMember
Artek Microelectronics Co., Ltd. ("Artek Microelectronics Shenzhen") [Member]
Business Acquisition [Line Items]
Percentage of ownership	100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / dei_LegalEntityAxis = acts_ArtekMicroelectronicsCoLtdArtekMicroelectronicsShenzhenMember	100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / dei_LegalEntityAxis = acts_ArtekMicroelectronicsCoLtdArtekMicroelectronicsShenzhenMember
Actions Capital Investment Inc. [Member]
Business Acquisition [Line Items]
Percentage of ownership	100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / dei_LegalEntityAxis = acts_ActionsCapitalInvestmentIncMember	100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / dei_LegalEntityAxis = acts_ActionsCapitalInvestmentIncMember
Actions Capital Investment (Malaysia) Inc. Co., Ltd. ("Actions Malaysia ") [Member]
Business Acquisition [Line Items]
Percentage of ownership	100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / dei_LegalEntityAxis = acts_ActionsCapitalInvestmentMalaysiaIncCoLtdActionsMalaysiaMember	100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / dei_LegalEntityAxis = acts_ActionsCapitalInvestmentMalaysiaIncCoLtdActionsMalaysiaMember
Mavrix Technology, Inc. ("Mavrix") [Member]
Business Acquisition [Line Items]
Percentage of ownership	93.40%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / dei_LegalEntityAxis = acts_MavrixTechnologyIncMavrixMember	93.40%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / dei_LegalEntityAxis = acts_MavrixTechnologyIncMavrixMember
Mavrix Technology (H.K.) Co., Limited ("Mavrix HK") [Member]
Business Acquisition [Line Items]
Percentage of ownership	93.40%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / dei_LegalEntityAxis = acts_MavrixTechnologyHkCoLimitedMavrixHkMember	93.40%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / dei_LegalEntityAxis = acts_MavrixTechnologyHkCoLimitedMavrixHkMember
Shanghai Mavrix Electronics, Ltd. ("Mavrix Shanghai") [Member]
Business Acquisition [Line Items]
Percentage of ownership	93.40%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / dei_LegalEntityAxis = acts_ShanghaiMavrixElectronicsLtdMavrixShanghaiMember	93.40%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / dei_LegalEntityAxis = acts_ShanghaiMavrixElectronicsLtdMavrixShanghaiMember

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