v2.4.1.9

INVESTMENT IN EQUITY METHOD INVESTEES (Schedule of Carrying Value of Equity Method Investees) (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | May 31, 2014 | Dec. 31, 2013 | Apr. 30, 2013
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Schedule of Equity Method Investments [Line Items] |  |  |  |
Carrying value of equity method investees | $ 27,352 us-gaap_EquityMethodInvestments |  | $ 17,843 us-gaap_EquityMethodInvestments |
Beijing Actions [Member] |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Carrying value of equity method investees | 3,332 us-gaap_EquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = acts_ActionsMicroelectronicsCoLtdMember |  | 2,856 us-gaap_EquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = acts_ActionsMicroelectronicsCoLtdMember |
Nann Capital [Member] |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Carrying value of equity method investees | $ 24,020 us-gaap_EquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = acts_NannCapitalCorporationNannCapitalMember | $ 9,016 us-gaap_EquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = acts_NannCapitalCorporationNannCapitalMember | $ 14,987 us-gaap_EquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = acts_NannCapitalCorporationNannCapitalMember | $ 3,712 us-gaap_EquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = acts_NannCapitalCorporationNannCapitalMember

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- Definition This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35755396&loc=d3e33749-111570 + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | debit
Period Type: | instant

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- Details
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
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