v2.4.1.9

ORGANIZATION AND PRINCIPAL ACTIVITIES (Details) | 12 Months Ended
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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. (&quot;Mavrix&quot;) [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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