v2.4.1.9
SCHEDULE 1 BALANCE SHEETS (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Current assets:        
Cash and cash equivalents $ 78,177us-gaap_CashAndCashEquivalentsAtCarryingValue $ 53,263us-gaap_CashAndCashEquivalentsAtCarryingValue $ 71,336us-gaap_CashAndCashEquivalentsAtCarryingValue $ 33,207us-gaap_CashAndCashEquivalentsAtCarryingValue
Prepaid expenses and other current assets 4,511us-gaap_PrepaidExpenseAndOtherAssetsCurrent 3,972us-gaap_PrepaidExpenseAndOtherAssetsCurrent    
Total current assets 192,756us-gaap_AssetsCurrent 239,306us-gaap_AssetsCurrent    
Investments in equity method investees 27,352us-gaap_EquityMethodInvestments 17,843us-gaap_EquityMethodInvestments    
Acquired intangible assets, net 16,459us-gaap_IntangibleAssetsNetExcludingGoodwill 12,218us-gaap_IntangibleAssetsNetExcludingGoodwill    
TOTAL ASSETS 284,680us-gaap_Assets 335,943us-gaap_Assets    
Current liabilities:        
Short-term bank borrowing 45,000us-gaap_ShortTermBorrowings 35,500us-gaap_ShortTermBorrowings    
Accrued expenses and other current liabilities 8,349acts_AccruedExpensesAndOtherCurrentLiabilities 6,127acts_AccruedExpensesAndOtherCurrentLiabilities    
Total liabilities 62,610us-gaap_Liabilities 53,398us-gaap_Liabilities    
Equity:        
Ordinary shares of par value $0.000001: 2,000,000,000 shares authorized 353,016,455 (2013: 411,474,516) shares issued and outstanding 1us-gaap_CommonStockValue 1us-gaap_CommonStockValue    
Additional paid-in capital 63,046us-gaap_AdditionalPaidInCapitalCommonStock 63,001us-gaap_AdditionalPaidInCapitalCommonStock    
Treasury Stock (70,479)us-gaap_TreasuryStockValue (44,119)us-gaap_TreasuryStockValue    
Accumulated other comprehensive income 36,937us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax 40,734us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax    
Retained earnings 192,598us-gaap_RetainedEarningsAccumulatedDeficit 222,959us-gaap_RetainedEarningsAccumulatedDeficit    
Total equity 222,103us-gaap_StockholdersEquity 282,576us-gaap_StockholdersEquity    
TOTAL LIABILITIES AND EQUITY 284,680us-gaap_LiabilitiesAndStockholdersEquity 335,943us-gaap_LiabilitiesAndStockholdersEquity    
Parent Company [Member]        
Current assets:        
Cash and cash equivalents 14,369us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
688us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
1,255us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
1,882us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Amounts due from subsidiary 7,768us-gaap_DueFromAffiliateCurrent
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
15,343us-gaap_DueFromAffiliateCurrent
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Prepaid expenses and other current assets 137us-gaap_PrepaidExpenseAndOtherAssetsCurrent
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
54us-gaap_PrepaidExpenseAndOtherAssetsCurrent
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Total current assets 22,274us-gaap_AssetsCurrent
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
16,085us-gaap_AssetsCurrent
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Investment in subsidiaries 334,201us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
398,324us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Investments in equity method investees 24,020us-gaap_EquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
14,987us-gaap_EquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Acquired intangible assets, net 4,661us-gaap_IntangibleAssetsNetExcludingGoodwill
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
621us-gaap_IntangibleAssetsNetExcludingGoodwill
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
TOTAL ASSETS 385,156us-gaap_Assets
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
430,017us-gaap_Assets
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Current liabilities:        
Short-term bank borrowing 10,000us-gaap_ShortTermBorrowings
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
      
Accrued expenses and other current liabilities 903acts_AccruedExpensesAndOtherCurrentLiabilities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
1,228acts_AccruedExpensesAndOtherCurrentLiabilities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Amounts due to subsidiaries 152,150us-gaap_DueToAffiliateCurrent
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
146,213us-gaap_DueToAffiliateCurrent
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Total liabilities 163,053us-gaap_Liabilities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
147,441us-gaap_Liabilities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Equity:        
Ordinary shares of par value $0.000001: 2,000,000,000 shares authorized 353,016,455 (2013: 411,474,516) shares issued and outstanding 1us-gaap_CommonStockValue
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
1us-gaap_CommonStockValue
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Additional paid-in capital 63,046us-gaap_AdditionalPaidInCapitalCommonStock
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
63,001us-gaap_AdditionalPaidInCapitalCommonStock
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Treasury Stock (70,479)us-gaap_TreasuryStockValue
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(44,119)us-gaap_TreasuryStockValue
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Accumulated other comprehensive income 36,937us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
40,734us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Retained earnings 192,598us-gaap_RetainedEarningsAccumulatedDeficit
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
222,959us-gaap_RetainedEarningsAccumulatedDeficit
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Total equity 222,103us-gaap_StockholdersEquity
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
282,576us-gaap_StockholdersEquity
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
TOTAL LIABILITIES AND EQUITY $ 385,156us-gaap_LiabilitiesAndStockholdersEquity
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
$ 430,017us-gaap_LiabilitiesAndStockholdersEquity
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember