v2.4.1.9

MATERIAL RELATED PARTY DISCLOSURE (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
G.M.I. Technology Inc. [Member] |  |  |
Related Party Transaction [Line Items] |  |  |
Related party transactions, net sales from related party | $ 9,211 us-gaap_RevenueFromRelatedParties / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_ImmediateFamilyMemberOfManagementOrPrincipalOwnerMember | $ 4,639 us-gaap_RevenueFromRelatedParties / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_ImmediateFamilyMemberOfManagementOrPrincipalOwnerMember | $ 1,794 us-gaap_RevenueFromRelatedParties / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_ImmediateFamilyMemberOfManagementOrPrincipalOwnerMember
Due from related party | 1,650 us-gaap_DueFromRelatedParties / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_ImmediateFamilyMemberOfManagementOrPrincipalOwnerMember | 1,301 us-gaap_DueFromRelatedParties / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_ImmediateFamilyMemberOfManagementOrPrincipalOwnerMember |
Beijing Actions [Member] |  |  |
Related Party Transaction [Line Items] |  |  |
Due from related party | 41 us-gaap_DueFromRelatedParties / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_EquityMethodInvesteeMember | 38 us-gaap_DueFromRelatedParties / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_EquityMethodInvesteeMember |
Realtek Semiconductor Corporation [Member] |  |  |
Related Party Transaction [Line Items] |  |  |
Related party transactions, net purchase from related party | 817 us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = acts_RealtekSemiconductorCorporationMember |  |
Due to related party | $ 259 us-gaap_DueToRelatedPartiesCurrentAndNoncurrent / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = acts_RealtekSemiconductorCorporationMember |  |

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