v2.4.1.9

SEGMENT AND GEOGRAPHIC INFORMATION (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Segment Reporting Information [Line Items] |  |  |
Revenue | $ 50,260 us-gaap_Revenues | $ 69,391 us-gaap_Revenues | $ 54,329 us-gaap_Revenues
Gross profit | 4,066 us-gaap_GrossProfit | 21,426 us-gaap_GrossProfit | 19,222 us-gaap_GrossProfit
MMP SoC for portable media players [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 50,143 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = acts_SegmentOneMember | 69,256 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = acts_SegmentOneMember | 54,150 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = acts_SegmentOneMember
Gross profit | 3,995 us-gaap_GrossProfit / us-gaap_StatementBusinessSegmentsAxis = acts_SegmentOneMember | 21,349 us-gaap_GrossProfit / us-gaap_StatementBusinessSegmentsAxis = acts_SegmentOneMember | 19,143 us-gaap_GrossProfit / us-gaap_StatementBusinessSegmentsAxis = acts_SegmentOneMember
Testing solutions [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 117 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = acts_SegmentTwoMember | 135 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = acts_SegmentTwoMember | 179 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = acts_SegmentTwoMember
Gross profit | $ 71 us-gaap_GrossProfit / us-gaap_StatementBusinessSegmentsAxis = acts_SegmentTwoMember | $ 77 us-gaap_GrossProfit / us-gaap_StatementBusinessSegmentsAxis = acts_SegmentTwoMember | $ 79 us-gaap_GrossProfit / us-gaap_StatementBusinessSegmentsAxis = acts_SegmentTwoMember

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- Definition Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1,2) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
Name: | us-gaap_Revenues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
Name: | us-gaap_SegmentReportingInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

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- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=acts_SegmentTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |