Accounting Policies [Abstract] Accounting Policies [Abstract] Accounting Standards Update 2014-09 [Member] ASU 2014-09 [Member] Accounting Standards Update 2015-17 [Member] ASU 2015-17 [Member] Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block] Accrued liabilities and other current liabilities Accounts Payable, Current Accounts payable (including accounts payable of the consolidated variable interest entity ("VIE") and its subsidiary without recourse to the Company of US$28 and US$29 as of December 31, 2016 and 2017, respectively) Accounts payable of the consolidated variable interest entity ("VIE") and its subsidiary without recourse to the Company Accounts Receivable, Gross, Current Accounts receivable, gross Accounts Receivable [Member] Accounts Receivable [Member] Accounts Receivable, Net, Current Accounts receivable, net of allowance for doubtful receivables of US$1,693 and US$1,478 as of December 31, 2016 and 2017, respectively Accounts receivable, net Accounts Receivable, Net, Current [Abstract] Accounts Receivable, Net, Current [Abstract] Accretion of convertible preferred stock to redemption value. Accretion Of Convertible Preferred Stock To Redemption Value Accretion to preferred shares redemption value The amount of accretion of the redeemable ordinary shares during the period. Accretion to Redeemable Ordinary Shares Redemption Value Accretion to redeemable ordinary shares redemption value Accretion to redeemable ordinary shares redemption value Accrued employee expenses current. Accrued Employee Expenses Current Accrued employee benefits Accrued Income Taxes, Current Income tax payable Accrued Liabilities and Other Liabilities Accrued liabilities and other current liabilities of the consolidated VIE and its subsidiary without recourse to the Company Accrued liabilities and other current liabilities Accrued liabilities and other current liabilities Accrued liabilities and other current liabilities (including accrued liabilities and other current liabilities of the consolidated VIE and its subsidiary without recourse to the Company of US$404 and US$804 as of December 31, 2016 and 2017, respectively) Accrued Liabilities and Other Liabilities [Abstract] Accrued Liabilities and Other Liabilities [Abstract] Accrued Marketing Costs, Current Accrued marketing and hosting expense Accrued Professional Fees, Current Accrued professional fees Accrued rebates. Accrued Rebates Rebates payable to customers Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Less: Accumulated depreciation Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive losses AOCI Attributable to Parent [Member] Accumulated Other Comprehensive Losses [Member] Acquired Finite-Lived Intangible Assets [Line Items] Acquired Finite-Lived Intangible Assets [Line Items] Acquired Finite-lived Intangible Assets, Weighted Average Useful Life Estimated useful life Additional Financial Information Disclosure [Text Block] Additional Information: Condensed Financial Statements of Parent Company Additional Paid in Capital, Common Stock Additional paid-in capital Additional Paid-in Capital [Member] Additional Paid-in Capital [Member] Adjustment on payments to acquire businesses, gross. Adjustment on Payments to Acquire Businesses, Gross Adjustment on cash consideration Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Share-based compensation expense Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net loss to net cash used in operating activities Advertising Expense Advertising expenses All Currencies [Domain] All Currencies [Domain] Allocated Share-based Compensation Expense Compensation cost recognized Share-based compensation expense and additional paid in capital Allowance for Credit Losses on Financing Receivables [Table Text Block] Summary of Movement in Allowance for Doubtful Accounts Allowance for Doubtful Accounts Receivable, Current Balance at the end of year Balance at the beginning of year Accounts receivable, allowance for doubtful receivables Less: allowance for doubtful accounts Allowance for doubtful accounts receivable exchange differences. Allowance For Doubtful Accounts Receivable Exchange Differences Exchange differences Allowance for Doubtful Accounts Receivable, Recoveries Recoveries Recovery of doubtful debts previously provided for Allowance for Doubtful Accounts Receivable [Roll Forward] Allowance for doubtful accounts receivable Allowance for Doubtful Accounts Receivable, Write-offs Accounts receivable written off Amendment Flag Amendment Flag American depositary shares. American Depositary Shares [Member] American Depositary Shares [Member] Amortization of Intangible Assets Amortization expense Amortization of intangible assets Amount of Restricted Net Assets for Consolidated and Unconsolidated Subsidiaries Restricted net assets Anhui Zhiyunzhong Information Technology Co Ltd. Anhui Zhiyunzhong Information Technology Co Ltd [Member] Anhui Zhiyunzhong Information Technology Co Ltd [Member] Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Ordinary shares equivalent excluded from computation of diluted net loss per ordinary share Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Appropriation of net income to statutory reserve required percentage. Appropriation of Net Income to Statutory Reserve Required Percentage Percentage of after tax net income transferred to statutory general reserve Percentage of net after-tax income of Group's subsidiary and VIE required to be annually appropriated to the statutory general reserve fund prior to payment of any dividends Arda holdings limited. Arda Holdings Limited [Member] Arda Holdings Limited [Member] Asset Impairment Charges Impairments of assets Assets Total assets Total assets Assets [Abstract] Assets Assets, Current Total current assets Assets, Current [Abstract] Current assets Assets, Noncurrent Total non-current assets Assets, Noncurrent [Abstract] Non-current asset Non-current assets Award Date [Axis] Award Date [Axis] Award Date [Domain] Award Date [Domain] Award Type [Axis] Award Type [Axis] Bank deposits with original maturities over three months. Bank Deposits With Original Maturity of More Than Three Months Time deposit Bank rate. Bank Rate [Member] People's Bank of China Interest Rate [Member] Basis of Accounting, Policy [Policy Text Block] Basis of presentation Beijing OptAim network technology co ltd. Beijing Opt Aim Network Technology Co Ltd [Member] Beijing OptAim Network Technology Co Ltd [Member] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition [Line Items] Business Acquisition [Line Items] Business Acquisition, Percentage of Voting Interests Acquired Equity interest acquired Remaining equity interest purchased Business Acquisition, Pro Forma Earnings Per Share, Basic Pro forma basic net loss per share Business Acquisition, Pro Forma Earnings Per Share, Diluted Pro forma diluted net loss per share Business Acquisition, Pro Forma Information [Abstract] Business Acquisition, Pro Forma Information [Abstract] Business Acquisition, Pro Forma Information [Table Text Block] Schedule of Unaudited Pro Forma Operating Results Business Acquisition, Pro Forma Net Income (Loss) Net loss Business Acquisition, Pro Forma Revenue Net revenues Business acquisition valuation amount. Business Acquisition Valuation Amount Total merger and acquisition Business Combination, Consideration Transferred Total purchase consideration Total Business Combination, Consideration Transferred [Abstract] Business Combination, Consideration Transferred [Abstract] Business Combination, Consideration Transferred, Equity Interests Issued and Issuable Ordinary shares of the Company Business combination, consideration transferred, fair value of replacement awards attributable to pre-acquisition services. Business Combination, Consideration Transferred, Fair Value of Replacement Awards Attributable to Pre-acquisition Services Fair value of replacement awards attributable to pre-acquisition services Business Combination Disclosure [Text Block] Business Acquisition Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents Cash Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other Other current assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities Current liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Deferred tax liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill Gross carrying amount Intangible asset Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net Total identifiable net assets acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment Property and equipment Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net Total purchase consideration, net of cash acquired Business Combinations [Abstract] Business Combinations [Abstract] Business Combinations Policy [Policy Text Block] Business combinations Business Combination, Step Acquisition, Equity Interest in Acquiree, Including Subsequent Acquisition, Percentage Purchase of equity interest by exercising option Subsequent purchase of equity interest by exercising option Buzzinate company limited. Buzzinate Company Limited [Member] Buzzinate Company Limited [Member] Buzzinate Shanghai Information Technology Co Ltd. Buzzinate Shanghai Information Technology Co Ltd [Member] Buzzinate Shanghai Information Technology Co Ltd [Member] Capitalized Computer Software, Net Capitalized costs related to internal use software Cash and Cash Equivalents [Abstract] Cash and Cash Equivalents [Abstract] Cash and cash equivalents and time deposits. Cash and Cash Equivalents and Time Deposits Cash and cash equivalents and time deposits Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents at the end of year Cash and cash equivalents at the beginning of year Cash and cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Cash and cash equivalents Cash and Cash Equivalents [Line Items] Cash and Cash Equivalents [Line Items] Cash and Cash Equivalents, Period Increase (Decrease) Net (decrease)/increase in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect Net (decrease)/increase in cash and cash equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Cash and cash equivalents Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Restricted Cash Cash, Cash Equivalents, and Short-term Investments [Text Block] Cash and cash equivalents and time deposit Cash Collateral for Borrowed Securities Restricted cash as required by loan agreement Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Non-cash investing and financing activities: China search Asia limited. China Search Asia Limited [Member] China Search Asia Limited [Member] Variable Interest Entity, Classification [Domain] Variable Interest Entity, Classification [Domain] Class of Stock [Domain] Class of Stock [Domain] Class of Stock [Line Items] Class of Stock [Line Items] Class of Warrant or Right, Exercise Price of Warrants or Rights Warrants issued, price per share Class of Warrant or Right, Number of Securities Called by Warrants or Rights Warrants issued CHINA PRC [Member] China, Yuan Renminbi RMB [Member] Collateral [Axis] Collateral [Axis] Collateral [Domain] Collateral [Domain] Commitments and Contingencies Commitments and contingencies Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Text Block] Commitments and contingencies Common Class A [Member] Ordinary Shares - Class A [Member] Common Class B [Member] Ordinary Shares - Class B [Member] Common Stock [Member] Ordinary shares [Member] Common Stock, Par or Stated Value Per Share Ordinary shares, par value Common Stock, Shares Authorized Ordinary shares, shares authorized Common Stock, Shares, Issued Ordinary shares, issued Ordinary shares, shares issued Common Stock, Shares, Outstanding Ending balance, shares Beginning balance, shares Ordinary shares, shares outstanding Common Stock Subject to Mandatory Redemption [Member] Redeemable ordinary shares [Member] Common Stock, Value, Issued Ordinary shares Common Stock, Voting Rights Number of vote entitled, ordinary share Compensation Related Costs [Abstract] Compensation Related Costs [Abstract] Compensation Related Costs, Policy [Policy Text Block] Share-based compensation Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive loss attributable to iClick Interactive Asia Group Limited Comprehensive loss attributable to iClick Interactive Asia Group Limited Comprehensive Income, Policy [Policy Text Block] Comprehensive loss Computer Software, Intangible Asset [Member] Computer Software [Member] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Concentration Risk Disclosure [Text Block] Certain risks and concentration Concentration Risk, Percentage Concentration risk percentage Concentration Risk Type [Domain] Concentration Risk Type [Domain] Condensed Balance Sheet Statements, Captions [Line Items] Condensed Balance Sheet Statements, Captions [Line Items] Condensed Balance Sheet Statement [Table] Condensed Balance Sheet Statement [Table] Condensed Cash Flow Statements, Captions [Line Items] Condensed Cash Flow Statements, Captions [Line Items] Condensed Cash Flow Statement [Table] Condensed Cash Flow Statement [Table] Condensed Financial Information of Parent Company Only Disclosure [Abstract] Condensed Financial Information of Parent Company Only Disclosure [Abstract] Condensed Income Statements, Captions [Line Items] Condensed Income Statements, Captions [Line Items] Condensed Income Statement [Table] Condensed Income Statement [Table] Condensed Statement of Comprehensive Income [Table] Condensed Statement of Comprehensive Income [Table] Condensed Statement of Comprehensive Income [Table Text Block] Summary of Condensed Statements of Comprehensive Loss Condensed Statement of Income Captions [Line Items] Condensed Statement of Income Captions [Line Items] Consolidated Entities [Axis] Consolidated Entities [Axis] Consolidated Entities [Domain] Consolidated Entities [Domain] Consolidation, Policy [Policy Text Block] Consolidation Conversion of Stock, Amount Converted Conversion to Class A ordinary shares Conversion of Stock, Shares Converted Conversion of ordinary shares Convertible Preferred Stock, Shares Issued upon Conversion Ordinary share each share of preferred shares can be converted into Cost of Revenue Cost of revenues Cost of revenues Cost of Sales [Member] Cost of Revenues [Member] Counterparty Name [Axis] Counterparty Name [Axis] Report Date [Axis] Report Date [Axis] Credit Concentration Risk [Member] Credit Concentration Risk [Member] Currency [Axis] Currency [Axis] Current Fiscal Year End Date Current Fiscal Year End Date Current Income Tax Expense (Benefit) Current income tax expense Customer Deposits, Current Security deposit received from customers Customer one. Customer One [Member] Customer One [Member] Customer two. Customer Two [Member] Customer Two [Member] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Debt Disclosure [Text Block] Bank borrowings Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Basis Spread on Variable Rate Debt instrument, basis spread on variable rate Debt Instrument, Interest Rate, Effective Percentage Annual compound interest Debt Instrument, Interest Rate, Stated Percentage Debt instrument, fixed instrument Debt Instrument [Line Items] Debt Instrument [Line Items] Debt Instrument, Maturity Date Debt instrument maturity date Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Debt Instrument, Redemption Price, Percentage Redemption price percentage Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Debt instrument terms. Debt Instrument Terms Maturity term Debt, Weighted Average Interest Rate Weighted average interest rate for bank loans outstanding Financial Statement Filing Date [Domain] Financial Statement Filing Date [Domain] Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] Deferred Income Taxes and Tax Credits Deferred tax Deferred Income Tax Expense (Benefit) Deferred tax benefits Deferred Tax Liabilities, Gross Deferred tax liabilities net Deferred Revenue [Abstract] Deferred Revenue [Abstract] Deferred Revenue, by Arrangement, Disclosure [Table Text Block] Summary of Deferred Revenue Deferred Revenue, Current Deferred revenue, current Deferred revenue (including deferred revenue of the consolidated VIE and its subsidiary without recourse to the Company of US$11,878 and US$5,986 as of December 31, 2016 and 2017, respectively) Deferred revenue of the consolidated VIE and its subsidiary without recourse to the Company Deferred Revenue Disclosure [Text Block] Deferred revenue Deferred Tax Assets, Net of Valuation Allowance Deferred tax assets net Deferred Tax Assets, Net of Valuation Allowance, Current Classification [Abstract] Deferred tax assets Deferred Tax Assets, Net of Valuation Allowance, Noncurrent Deferred tax assets Deferred Tax Assets, Operating Loss Carryforwards Tax losses carried forward Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits Share-based payments Deferred Tax Assets, Valuation Allowance Ending balance Beginning balance Deferred Tax Assets, Valuation Allowance, Noncurrent Less: Valuation allowance Deferred Tax Liabilities Amortization Of Intangible Assets Noncurrent Deferred Tax Liabilities Amortization Of Intangible Assets Noncurrent Acquired intangible assets