v2.4.1.9

MAINLAND CHINA PROFIT APPROPRIATION AND RESTRICTION ON CAPITAL REPATRIATION (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
MAINLAND CHINA PROFIT APPROPRIATION AND RESTRICTION ON CAPITAL REPATRIATION [Abstract]
Minimum annual appropriations to general reserve fund, as a percent of after-tax profits.	10.00%acts_StatutoryReservesMinimumAnnualAppropriationsPercentOfProfit
Balance of PRC subsidiaries reserves	$ 14,299us-gaap_ValuationAllowancesAndReservesBalance	$ 14,299us-gaap_ValuationAllowancesAndReservesBalance
Restricted capital and reserves	$ 113,505us-gaap_OtherRestrictedAssets	$ 134,571us-gaap_OtherRestrictedAssets

X

- Details

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Namespace Prefix:	acts_
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X

- Definition

The minimum required appropriations to the general reserve fund required by the PRC, as a percentage of after-tax profits.

+ References

No definition available.

+ Details

Name:	acts_StatutoryReservesMinimumAnnualAppropriationsPercentOfProfit
Namespace Prefix:	acts_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Total assets that cannot be used for operating purposes because of contract or regulatory requirements that are in effect for a period that extends beyond one year.

+ 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 210.5-02.17)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 09

-Article 12

+ Details

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Balance Type:	credit
Period Type:	instant