Weighted Average Remaining Lease Terms and Discount Rates for Operating Leases Lessee, Operating Lease, Weighted Average Remaining Lease Term and Discount Rate [Table Text Block] Tabular disclosure of weighted average remaining lease terms and discount rates for operating leases. Withholding tax Effective Income Tax Rate Reconciliation, Withholding Tax, Amount Effective Income Tax Rate Reconciliation, Withholding Tax, Amount Financial Instruments Investment, Policy [Policy Text Block] Debt and Equity Securities, FV-NI [Line Items] Debt and Equity Securities, FV-NI [Line Items] Debt Securities, Available-for-Sale Debt Securities, Available-for-Sale [Table Text Block] Loan 3 Loan Three [Member] Loan Three Award Timing Predetermined Award Timing Predetermined [Flag] Income Taxes [Line Items] Income Taxes [Line Items] Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Share-based payment awards Effective Income Tax Rate Reconciliation, Tax Expense (Benefit), Share-Based Payment Arrangement, Percent Entity File Number Entity File Number Additional Paid- in Capital Additional Paid-in Capital [Member] Tabular List, Table Tabular List [Table Text Block] Recently Adopted Accounting Pronouncements and Recently issued accounting pronouncements not yet adopted New Accounting Pronouncements, Policy [Policy Text Block] Purchase of short-term investments Payments to Acquire Short-Term Investments Related Party Balances and Transactions Schedule of Related Party Transactions [Table Text Block] Concentration of Credit Risk [Abstract] Concentration of Credit Risk [Abstract] Concentration of Credit Risk [Abstract] R&D deduction Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount Undistributed earnings of foreign subsidiaries Undistributed Earnings of Foreign Subsidiaries Condensed Cash Flow Statement [Table] Condensed Cash Flow Statement [Table] Adjustment to Compensation: Adjustment to Compensation [Axis] RELATED PARTY BALANCES AND TRANSACTIONS Related Party Transactions Disclosure [Text Block] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Supplemental Cash Flow Information Related to Operating Leases Lessee Operating Lease Supplemental Cash Flow Information Related to Operating Leas [Table Text Block] Tabular disclosure of lessee's operating lease supplemental cash flow information. REVENUE FROM CONTRACTS WITH CUSTOMERS Revenue from Contract with Customer [Text Block] Stock-based compensation (U.S.) Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-Based Compensation Cost Stock, Class of Stock [Table] Stock, Class of Stock [Table] Loan from Bank of Shanghai Bank of Shanghai [Member] Bank of Shanghai Cash and Cash Equivalents Schedule of Cash and Cash Equivalents [Table Text Block] Total current tax expense Current Income Tax Expense (Benefit) Others Other Assets, Miscellaneous, Noncurrent Adjustment to Compensation, Amount Adjustment to Compensation Amount Concentration risk percentage Concentration Risk, Percentage Accrued Lingang construction fees Accrued Construction Fees, Current Accrued Construction Fees, Current Stock-based compensation Share-Based Payment Arrangement, Noncash Expense Additions Product Warranty Accrual Additions The amount of increase in the product warranty accrual. Option Share-Based Payment Arrangement, Option [Member] Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Tax rate Effective Income Tax Rate Reconciliation, Percent [Abstract] Subpart F Effective Income Tax Rate Reconciliation, Cross-Border, Subpart F, Amount Effective Income Tax Rate Reconciliation, Cross-Border, Subpart F, Amount Total ACM Research, Inc. stockholders’ equity Equity, Attributable to Parent Standard Product Warranty Disclosure [Abstract] Standard Product Warranty Disclosure [Abstract] Insider Trading Policies and Procedures [Line Items] Common stock, shares authorized (in shares) Common Stock, Shares Authorized Property, Plant and Equipment Property, Plant and Equipment [Table Text Block] Liabilities and Equity Liabilities and Equity [Abstract] U.S. State State and Local Jurisdiction [Member] Cover [Abstract] Cover [Abstract] Cash and cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Maximum Maximum [Member] Vested and exercisable (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price Less: Net income attributable to non-controlling interests Net Income (Loss) Attributable to Noncontrolling Interest Intangible assets, net Finite-Lived Intangible Assets, Net Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] LONG-TERM INVESTMENTS Long-Term Investment [Text Block] The entire disclosure for long-term investment. Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Lisa Feng [Member] Lisa Feng Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Entity Shell Company Entity Shell Company Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Schedule of Cash Flow, Supplemental Disclosures Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] Ninebell - ACM Shanghai Ninebell - ACM Shanghai [Member] Ninebell - ACM Shanghai Less: Comprehensive income attributable to non-controlling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Line of Credit Facility [Table] Line of Credit Facility [Table] U.S Income (Loss) from Continuing Operations before Income Taxes, Domestic Current portion of operating lease liabilities Operating Lease, Liability, Current Other payables and accrued expenses (note 9) Other payables and accrued expenses (note 9) Other Accounts Payable and Accrued Liabilities Realized gain from sale of short-term investments Marketable Security, Realized Gain (Loss) Document Fiscal Period Focus Document Fiscal Period Focus Accounts Receivable, Net Receivable [Policy Text Block] Award Timing Method Award Timing Method [Text Block] SMIC Semiconductor Manufacturing International Corporation [Member] Name of the companies a Chinese limited partnership. Furniture and fixtures Furniture and Fixtures [Member] Award Type [Axis] Award Type [Axis] Parent Company Parent Company [Member] Investment, Name [Domain] Investment, Name [Domain] Stock-based Compensation Share-Based Payment Arrangement [Policy Text Block] Trading Symbol Trading Symbol 2029 Lessee, Operating Lease, Liability, to be Paid, Year Four Change in valuation allowance Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent Market value Debt Securities, Trading Securities, Equity The market value of investments in trading equity securities and other forms of trading securities that provide ownership interests. Ninebell Ninebell Co., Ltd [Member] Name of related party. Short-term time deposits (note 2) Deposits Assets, Current Entity Address, City or Town Entity Address, City or Town Unrealized gains (losses) recognized during the reporting period on short-term investment still held at December 31 Debt Securities, Trading, Unrealized Gain (Loss) Effect of exchange rate changes on cash, cash equivalents and restricted cash Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Total deferred tax assets Deferred Tax Assets, Net of Valuation Allowance Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Statement of Income Location, Balance [Domain] Statement of Income Location, Balance [Domain] Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Entity Emerging Growth Company Entity Emerging Growth Company 2028 Long-Term Debt, Maturity, Year Three Purchase of intangible assets Payments to Acquire Intangible Assets Outstanding, beginning of period (in shares) Outstanding, end of period (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number PARENT COMPANY ONLY CONDENSED FINANCIAL INFORMATION Condensed Financial Information of Parent Company Only Disclosure [Text Block] Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Other payables and accrued expenses Other Notes Payable Beginning balance (in shares) Ending balance (in shares) Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding Provision for credit losses Provision for credit losses Accounts Receivable, Credit Loss Expense (Reversal) ACCOUNTS RECEIVABLE, NET Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Disaggregated Revenue Information Disaggregation of Revenue [Table Text Block] Accrued machine sales fees Accrued Machine Sales Fees Current Carrying value as of the balance sheet date of obligations incurred through that date and payable for machine sales fees. Current: Current Income Tax Expense (Benefit), Continuing Operations [Abstract] Valuation allowance Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount Income taxes payable (note 16) Income taxes payable Accrued Income Taxes, Current Exercise of stock options Stock Issued During Period, Value, Stock Options Exercised Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Buildings and plants Buildings And Plants [Member] Facility held for productive use including, but not limited to, office, production, storage and distribution facilities and plant used in the operations of the entity. Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date Single Wafer Cleaning, Tahoe and Semi-Critical Cleaning Equipment Total Single Wafer and Semi-Critical Cleaning Equipment [Member] Goods and Services produced, developed and distributed by the entity. Income tax expense (note 16) Income tax expense Tax Expense / Effective Tax Rate Income tax expense Income Tax Expense (Benefit) Yusheng Micro Semiconductor (Shanghai) Co., Ltd. Yusheng Micro Semiconductor (Shanghai) Co., Ltd [Member] Yusheng Micro Semiconductor (Shanghai) Co., Ltd Class B Common Stock Common Stock Class B Common Class B [Member] Document Information [Line Items] Document Information [Line Items] Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Property, plant and equipment, gross Property, Plant and Equipment, Gross Purchase of long-term investments Payments to Acquire Long-Term Investments Prepayment for investment in Ninebell Prepayment For Equity Investment Prepayment For Equity Investment Condensed Cash Flow Statements, Captions [Line Items] Condensed Cash Flow Statements, Captions [Line Items] Cashless exercise of stock options Cashless Exercise of Stock Options Cashless exercise of stock options. Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Proceeds from issuance of ACM Shanghai’s shares, net of issuance costs Proceeds from Issuance of Private Placement Proceeds from exercise of stock options Proceeds from Stock Options Exercised Federal Income Tax Paid, Federal, after Refund Received All Trading Arrangements All Trading Arrangements [Member] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Net operating loss carry forwards (U.S.) and credit Deferred Tax Assets, Operating Loss Carryforwards, Domestic Other Effective Income Tax Rate Reconciliation, Other Adjustments, Amount Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Warranty Standard Product Warranty, Policy [Policy Text Block] Net operating loss carry forwards (offshore) Deferred Tax Assets, Operating Loss Carryforwards, Foreign Net cash (used in) provided by operating activities Net cash (used in) provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Repayments of short-term borrowings Repayments of Short-Term Debt Long-term investments (note 11) Long-term investments (note 11) Long-Term Investments ACM Research (Wuxi), Inc. ("ACM Wuxi") ACM Research (Wuxi), Inc. [Member] Entity owned or controlled by another entity. Estimated useful lives Property, Plant and Equipment, Useful Life Subsequent Event Subsequent Event [Member] Assumptions Used to Determine Fair Value of Options Granted Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] PEO Total Compensation Amount PEO Total Compensation Amount Foreign Income Tax Paid, Foreign, after Refund Received [Abstract] Property, Plant and Equipment, Net, by Type [Abstract] Property, Plant and Equipment, Net, by Type [Abstract] Equity Components [Axis] Equity Components [Axis] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Number of reporting segments Number of Reportable Segments Refund of deposit for land use right Payments for (Proceeds from) Deposits on Real Estate Acquisitions Company A Company A [Member] Company A Three Customers Three Customers [Member] Information by number of customers. Entity Address, State or Province Entity Address, State or Province Total current liabilities Liabilities, Current Inventory [Axis] Inventory [Axis] Individual: Individual [Axis] Defined contribution plan, cost Defined Contribution Plan, Cost Equity method investment, aggregate cost Equity Method Investment, Aggregate Cost Other receivables Increase (Decrease) in Other Receivables Income Tax Jurisdiction [Domain] Income Tax Jurisdiction [Domain] Payments of ordinary dividends, common stock Payments of Ordinary Dividends, Common Stock Document Annual Report Document Annual Report Research and development expense Research and Development Expense [Member] SHORT-TERM INVESTMENTS Trading Securities [Text Block] The entire disclosure for trading securities. Capital contribution by non-controlling shareholder Proceeds from Noncontrolling Interests Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Repayments of long-term borrowings Repayments of Long-Term Debt Entity Interactive Data Current Entity Interactive Data Current Condensed Income Statement [Table] Condensed Income Statement [Table] Deferred revenue (offshore) Deferred Tax Assets, Deferred Income ACM Research (CA), Inc. ("ACM California") ACM Research (CA), Inc. [Member] Entity owned or controlled by another entity. Revenue Recognition Revenue from Contract with Customer [Policy Text Block] Vested and exercisable Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value Non-statutory rate items Effective Income Tax Rate Reconciliation, Foreign Rate Differential, Percent Effective Income Tax Rate Reconciliation, Foreign Rate Differential, Percent Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Long-Lived Tangible Asset [Axis] Long-Lived Tangible Asset [Axis] Other long-term assets (note 7) Total other long-term assets Other Assets, Noncurrent Cost Debt Securities, Trading, Amortized Cost Customer [Domain] Customer [Domain] Entity Central Index Key Entity Central Index Key PEO Name PEO Name Principal Payments for Outstanding Long-Term Loans Schedule of Maturities of Long-Term Debt [Table Text Block] Repurchase of ACM Shanghai's shares Payments for Repurchase of Equity Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Comprehensive income: Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] Advances from customers Advances from customers Contract with Customer, Liability, Current Lessee, Operating Lease, Description [Abstract] Lessee, Operating Lease, Description [Abstract] Balance at beginning of period Balance at end of period Accrued warranty Product Warranty Accrual, Current Exercise Price Award Exercise Price Entity Filer Category Entity Filer Category Class of Stock [Domain] Class of Stock [Domain] Income tax provision at statutory rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Inventory, Current [Table] Inventory, Current [Table] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Long-term borrowings (note 10) Long-Term Debt, Excluding Current Maturities Foreign income taxed in US Effective Income Tax Rate Reconciliation, Foreign Income Taxes, Percent Effective Income Tax Rate Reconciliation, Foreign Income Taxes, Percent Nonrelated Party Nonrelated Party [Member] Deferred tax assets: Deferred Tax Assets, Net [Abstract] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Class of Stock Disclosures [Abstract] Class of Stock Disclosures [Abstract] Amortized Cost Debt Securities, Available-for-Sale, Amortized Cost, after Allowance for Credit Loss Entity Address, Address Line One Entity Address, Address Line One Long-Term Investments [Abstract] Long-Term Investments [Abstract] Research and development Research and Development Expense Accumulated Other Comprehensive (Loss) AOCI Attributable to Parent [Member] Less: Allowance for credit losses Accounts Receivable, Allowance for Credit Loss, Current Lease liability Deferred Tax Assets, Lease Liability Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from lease liability. Work-in-process Inventory, Work in Process, Gross Tax incentive adjustment Effective Income Tax Rate Reconciliation, Tax Incentive Adjustment, Percent Effective Income Tax Rate Reconciliation, Tax Incentive Adjustment, Percent Fair Value as of Grant Date Award Grant Date Fair Value Operating loss carryforwards Operating Loss Carryforwards Worldwide changes in unrecognized tax benefits Effective Income Tax Rate Reconciliation, Tax Contingency, Amount Long-Term Borrowings Schedule of Long-Term Debt Instruments [Table Text Block] Unrecognized employee stock-based compensation expense Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Related Party Transaction [Line Items] Related Party Transaction [Line Items] Less: Dilutive effect arising from stock-based awards by ACM Shanghai Dilutive Securities, Effect on Basic Earnings Per Share, Dilutive Convertible Securities Deferred income taxes Deferred Income Taxes and Tax Credits Long-term borrowings Long-Term Debt, Fair Value Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Counterparty Name [Domain] Counterparty Name [Domain] 2027 Lessee, Operating Lease, Liability, to be Paid, Year Two Investments, All Other Investments [Abstract] Condensed Financial Information Disclosure [Abstract] Condensed Financial Information Disclosure [Abstract] Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Weighted Average Remaining Contractual Term Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Other Payables and Accrued Expenses Schedule of Accounts Payable and Accrued Liabilities [Table Text Block] Title Trading Arrangement, Individual Title Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Investment in partnership Investment in Partnership The amount of investment in partnership. Non-PEO NEO Non-PEO NEO [Member] Aggregate intrinsic value beginning balance Aggregate intrinsic value ending balance Outstanding intrinsic value Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value Equity investments and unrealized gain on short-term investments Deferred Tax Liabilities, Equity Investments and Unrealized Gains on Trading Securities Amount of deferred tax liability attributable to taxable temporary differences from equity investments and unrealized gains on trading securities. Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Land Land [Member] All Award Types Award Type [Domain] 2026 Lessee, Operating Lease, Liability, to be Paid, Year One Non-controlling interests Equity, Attributable to Noncontrolling Interest Equity Awards Adjustments Equity Awards Adjustments [Member] Leasehold improvements Leasehold Improvements [Member] Others Other Noncash Income (Expense) Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Compensation Amount Outstanding Recovery Compensation Amount Deferred: Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract] Withholding tax Effective Income Tax Rate Reconciliation, Withholding Tax, Percent Effective Income Tax Rate Reconciliation, Withholding Tax, Percent Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Expected dividend rate (as a percent) Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Revenue recognized from amounts included in contract liabilities at the beginning of the year Contract with Customer, Liability, Revenue Recognized Basis of Presentation and Principles of Consolidation Basis of Presentation and Principles of Consolidation [Policy Text Block] Disclosure of accounting policy for basis of presentation and principles of consolidation, used to prepare the financial statements. ACM Research (Chengdu), Inc. ("ACM Chengdu") ACM Research (Chengdu), Inc. ("ACM Chengdu") [Member] ACM Research (Chengdu), Inc. ("ACM Chengdu") Mainland China CHINA MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Foreign rate differential Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent Outstanding at beginning of period (in dollars per share) Outstanding at end of period (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Option, Nonvested, Weighted Average Exercise Price Purchase of long-term investments through other payable and accrued expenses Purchase Of Long-Term Investments Through Other Payable Purchase Of Long-Term Investments Through Other Payable Documents Incorporated by Reference Documents Incorporated by Reference [Text Block] Short-term and long-term time deposits Deposit Assets Inventory [Domain] Inventory [Domain] Tax Credits Effective Income Tax Rate Reconciliation, Tax Credit, Amount [Abstract] OTHER LONG-TERM ASSETS Other Assets, Non-Current Disclosure [Text Block] The entire disclosure for other noncurrent assets. Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Loan 2 Loan Two [Member] Amount borrowed from the bank on September 2021 with the annual interest rate is 2.6%. Sales and marketing Sales and marketing expenses Selling and Marketing Expense Foreign income taxed in US Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Percent 2026 Long-Term Debt, Maturity, Year One Unrealized gain on available-for-sale investments, net of tax OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax 2030 Long-Term Debt, Maturity, Year Five Transfer of prepayment for property to property, plant, and equipment Transfer of prepayment for property to property, plant and equipment Transfer of prepayment for property to property, plant and equipment. Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Inventories, net (note 5) Inventory, Net Other Effective Income Tax Rate Reconciliation, Other Reconciling Items, Percent [Abstract] Minimum Minimum [Member] Income Tax Authority, Name [Domain] Income Tax Authority, Name [Domain] Mainland China Subsidiaries Mainland China Subsidiaries [Member] Mainland China Subsidiaries Foreign tax effects Foreign Tax effects, Amount [Abstract] Foreign Tax effects, Amount Company Selected Measure Name Company Selected Measure Name Shengyi Shanghai Zhangjiang Group Co., Ltd. [Member] Name of related party. Cost of Revenue Cost of Goods and Service [Policy Text Block] Realized gain on short-term investments Gain (Loss) on Sale of Investments Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Accounts payable Accounts Payable, Current Operating cash outflow from operating leases Operating Lease, Payments Deferred tax liabilities: Deferred Tax Liabilities, Net [Abstract] Loan Four Loan Four [Member] Loan Four Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Net income available to common stockholders, diluted Net Income (Loss) Available to Common Stockholders, Diluted Foreign research and development expense Effective Income Tax Rate Reconciliation, Foreign Research Expense, Percent Effective Income Tax Rate Reconciliation, Foreign Research Expense, Percent Foreign Current Foreign Tax Expense (Benefit) Expected volatility rate, minimum (as a percent) Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Minimum COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] Diluted (in shares) Weighted average shares outstanding, diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Cash, cash equivalents and restricted cash and time deposits Cash, Cash Equivalents and Restricted Cash and Time Deposits Amount of currency on hand as well as time deposits current and non current with banks or financial institutions. Short-term debt, weighted average interest rate, at point in time Short-Term Debt, Weighted Average Interest Rate, at Point in Time Vested, fair value Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested in Period, Fair Value Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Total U.S. current tax expense Current Federal, State and Local, Tax Expense (Benefit) Entity Small Business Entity Small Business Sales and marketing expense Selling and Marketing Expense [Member] Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] China Hong Kong HONG KONG Electronic equipment Electronic Equipment [Member] Equipment that involves the controlled conduction of electrons (especially in a gas or vacuum or semiconductor) amplifier - electronic equipment that increases strength of signals passing through it. U.S. state Current State and Local Tax Expense (Benefit) LONG-TERM BORROWINGS Long-Term Debt [Text Block] Document Transition Report Document Transition Report Underlying Securities Award Underlying Securities Amount Equity Component [Domain] Equity Component [Domain] Document Period End Date Document Period End Date Operating and Financial Risks Operating and Financial Risks [Policy Text Block] Disclosure of accounting policy for operating and financial risks. INCOME TAXES Income Tax Disclosure [Text Block] Beginning balance Ending balance Accounts Receivable, Allowance for Credit Loss Class A Common Stock Common Stock Class A Common Class A [Member] Contractual obligation Contractual Obligation Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Short-term lease cost Short-Term Lease, Cost Vested and exercisable (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Standard assurance type warranty period Standard Product Warranty Period The standard warranty period of the product, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Operating lease liabilities Increase (Decrease) in Operating Lease Liability Total equity Beginning balance Ending balance Equity, Including Portion Attributable to Noncontrolling Interest Document Type Document Type Significant Unobservable Inputs (Level 3) Fair Value, Inputs, Level 3 [Member] Name Outstanding Recovery, Individual Name Additional paid-in capital Additional Paid in Capital Computer and office equipment Office Equipment [Member] Product and Service [Axis] Product and Service [Axis] Tracy Liu [Member] Tracy Liu Revenue (note 3) Revenues Revenue from Contract with Customer, Excluding Assessed Tax Sale of investment, amount receivable Sale of Investment, Amount Receivable Sale of Investment, Amount Receivable Total current assets Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Other receivables Other Receivables, Net, Current Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Exercised Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value Zhongjuxin Limited Company (“Zhongjuxin”) Zhongjuxin Limited Company (“Zhongjuxin”) [Member] Zhongjuxin Limited Company (“Zhongjuxin”) Borrowings From Bank Of China Borrowings From Bank Of China [Member] Borrowings From Bank Of China Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Net income available to common stockholders, basic Net Income (Loss) Available to Common Stockholders, Basic Restricted Net Assets Restricted Net Assets [Policy Text Block] Restricted Net Assets Current liabilities: Liabilities, Current [Abstract] Aggregate Intrinsic Value (In thousands) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Additional Disclosures [Abstract] Total operating expenses Operating Expenses Risk free interest rate, minimum (as a percent) Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum Quoted Prices in Active Markets for Identical Liabilities (Level 1) Fair Value, Inputs, Level 1 [Member] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Related Party Transaction [Table] Related Party Transaction [Table] Diluted (in dollars per share) Diluted (in dollars per share) Earnings Per Share, Diluted Accounts receivable, net (note 4) Account receivables, net Account receivables, net Accounts Receivable, after Allowance for Credit Loss, Current Accrued commissions Accrued Sales Commission, Current Sale of stock, number of shares issued in transaction (in shares) Sale of Stock, Number of Shares Issued in Transaction Exercised (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award Options Exercised in Period Weighted Average Grant Date Fair Value Weighted average grant-date fair value of non-vested options exercised. Loans from China CITIC Bank CITIC Bank [Member] CITIC Bank State and local Income Tax Paid, State and Local, after Refund Received DESCRIPTION OF BUSINESS Business Description and Basis of Presentation [Text Block] Investments, Debt and Equity Securities [Abstract] Investments, Debt and Equity Securities [Abstract] Auditor Location Auditor Location Prepaid expenses and other current assets Increase (Decrease) in Prepaid Expense Gross profit Gross Profit Number of installments for loan repayable Number of Installments for Loan Repayable Number of installments for loan repayable to bank. Condensed Balance Sheet Statement [Table] Condensed Balance Sheet Statement [Table] Comprehensive Income Comprehensive Income, Policy [Policy Text Block] U.S. Federal Domestic Tax Jurisdiction [Member] OTHER PAYABLES AND ACCRUED EXPENSES Accounts Payable and Accrued Liabilities Disclosure [Text Block] Less: Interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Cash and Cash Equivalents [Line Items] Cash and Cash Equivalents [Line Items] Cash paid for income taxes Cash paid for income taxes Income Taxes Paid, Net Everbright Bank Everbright Bank [Member] Everbright Bank Granted (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Accrued payroll Employee-related Liabilities, Current PROPERTY, PLANT AND EQUIPMENT, NET Property, Plant and Equipment Disclosure [Text Block] OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax Total lease payments Lessee, Operating Lease, Liability, to be Paid ACM Shanghai dividends Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders South Korea KOREA, REPUBLIC OF Expiration Date Trading Arrangement Expiration Date Equity Method Investments Equity Method Investments [Table Text Block] Property, plant and equipment, net (note 6) Total property, plant and equipment, net Property, Plant and Equipment, Net Numerator [Abstract] Net Income (Loss) Attributable to Parent [Abstract] Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Accounts receivable Increase (Decrease) in Accounts Receivable Shengyi Semiconductor Technology Co., Ltd. ("Shengyi") Shengyi Semiconductor Technology Company Limited [Member] Name of the companies components suppliers. Inventories, Net Inventory, Policy [Policy Text Block] Deferred revenue Deferred revenue Deferred Income, Current Entity Current Reporting Status Entity Current Reporting Status Receivables [Abstract] Receivables [Abstract] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Deposits Assets [Table] Deposits Assets [Table] Disclosure of information about deposit assets. Consolidated Entities [Domain] Consolidated Entities [Domain] U.S. federal statutory tax and Rate Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount Foreign tax credits Effective Income Tax Rate Reconciliation, Tax Credit, Foreign, Percent Consolidated balance sheets [Abstract] Statement of Financial Position [Abstract] Executive Category: Executive Category [Axis] Stock compensation Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-Based Payment Arrangement, Percent State and local income taxes, net of federal income tax effect* Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent Proceeds from long-term borrowings Proceeds from Issuance of Long-Term Debt Current Fiscal Year End Date Current Fiscal Year End Date Expected term (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term Accounts Receivable Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Granted (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Dividends from unconsolidated affiliates Proceeds from Equity Method Investment, Distribution Proceeds from sale of short-term investments (note 12) Proceeds from Sale and Maturity of Marketable Securities Condensed Balance Sheet Statements, Captions [Line Items] Condensed Balance Sheet Statements, Captions [Line Items] Unrecognized tax benefits Beginning balance Ending balance Unrecognized Tax Benefits Antidilutive securities excluded from computation of earnings per share, amount Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Weighted average common stock outstanding used in computing per share amounts (note 2): Weighted Average Number of Shares Outstanding, Diluted [Abstract] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] 2027 Long-Term Debt, Maturity, Year Two LEASES Lessee, Operating Leases [Text Block] Net cash provided by financing activities Net cash provided by financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Weighted Average Grant Date Fair Value [Abstract] Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Measure: Measure [Axis] Available-for-sale debt investments Debt Securities, Available-for-Sale, Noncurrent Financial Liabilities Fair Value Disclosure [Abstract] Financial Liabilities Fair Value Disclosure [Abstract] Long-Lived Tangible Asset [Domain] Long-Lived Tangible Asset [Domain] Deposits Assets [Line Items] Deposits Assets [Line Items] Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Statutory surplus reserve (note 2) Statutory Accounting Practices, Statutory Capital and Surplus, Balance Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Entity Tax Identification Number Entity Tax Identification Number Net realized gains on short-term investment sold during the year Debt Securities, Trading, Realized Gain (Loss) Employee Benefit Expenses Pension and Other Postretirement Plans, Nonpension Benefits, Policy [Policy Text Block] Outstanding, beginning of period (in dollars per share) Outstanding, end of period (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price Transportation equipment Transportation Equipment [Member] Foreign tax effects Foreign Tax Effects [Abstract] Foreign Tax Effects Common stock, shares issued (in shares) Common Stock, Shares, Issued Reconciliation of cash, cash equivalents and restricted cash in consolidated statements of cash flows: Reconciliation of cash, cash equivalents and restricted cash in consolidated statements of cash flows: [Abstract] Reconciliation of cash, cash equivalents and restricted cash in consolidated statements of cash flows: [Abstract] Weighted average remaining lease term (years) Operating Lease, Weighted Average Remaining Lease Term 2029 Long-Term Debt, Maturity, Year Four Entity Public Float Entity Public Float Interest expense Interest Expense, Nonoperating Trading Arrangement: Trading Arrangement [Axis] Income taxes payable Increase (Decrease) in Income Taxes Payable Total Shareholder Return Amount Total Shareholder Return Amount Income Taxes [Table] Income Taxes [Table] Disclosure of information about income taxes. Security Exchange Name Security Exchange Name Total foreign Income Tax Paid, Foreign, after Refund Received Other Effective Income Tax Rate Reconciliation, Cross-Border, Other, Percent Effect of cross-border tax laws Effective Income Tax Rate Reconciliation, Cross-Border Tax Effect, Percent [Abstract] Time deposits, interest rate Time Deposits Interest Rate The interest rate on time deposits received during the reporting period. Unrealized gain (loss) on short-term investments Unrealized (gain) loss on short-term investments Marketable Security, Unrealized Gain (Loss) Nondeductible Items Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount 2030 and thereafter Lessee, Operating Lease, Liability, to be Paid, Year Five And Thereafter Lessee, Operating Lease, Liability, to be Paid, Year Five And Thereafter Purchases of property, plant and equipment through other payable and accrued expenses Capital Expenditures Incurred but Not yet Paid Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Operating expenses: Operating Expenses [Abstract] Total net gains recognized at December 31 on short-term investment Debt Securities, Trading, Gain (Loss) Interest rate during period Line of Credit Facility, Interest Rate During Period Net operating loss carryforwards subject to annual limitation ownership change Operating Loss Carryforwards Subject to Annual Limitation Ownership Change Operating loss carryforwards are subject to annual limitation as a result of the ownership change. Statement [Line Items] Statement [Line Items] Hefei Shixi Chanheng Integrated Circuit Industry Venture Capital Fund Partnership (LP) (“Hefei Shixi”) Hefei Shixi Chanheng Integrated Circuit Industry Venture Capital Fund Partnership [Member] Name of the companies a Chinese limited partnership. Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Cash and cash equivalents Cash and Cash Equivalent Subsequent Event [Line Items] Subsequent Event [Line Items] Disaggregated Revenue Information [Abstract] Disaggregated Revenue Information [Abstract] Disaggregated Revenue Information [Abstract] Risk free interest rate, maximum (as a percent) Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Maximum Common Stock Common Stock Common Stock [Member] Net increase (decrease) in cash, cash equivalents and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Effect of dilutive securities (in shares) Weighted Average Number of Shares Outstanding, Diluted, Adjustment SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Significant Accounting Policies [Text Block] Tax incentive adjustment Effective Income Tax Rate Reconciliation, Tax Incentive Adjustment, Amount Effective Income Tax Rate Reconciliation, Tax Incentive Adjustment, Amount Statistical Measurement [Domain] Statistical Measurement [Domain] Non-cash operating lease cost Operating Lease, Cost, Non-Cash Operating Lease, Cost, Non-Cash Charles Pappis [Member] Charles Pappis Condensed Balance Sheets Condensed Balance Sheet [Table Text Block] Service Period Based Service Period Based Approach [Member] Fair value of option grants in period, valuation model assumptions based on service period. Estimated Useful Lives of Property, Plant and Equipment Schedule Of Estimated Useful Lives For Property And Equipment [Table Text Block] Tabular disclosure of the estimated useful lives of assets. Restricted cash Restricted Cash, Current Impairment of Long-Lived Assets Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block] Income from equity method investments Income from equity method investments Equity in earnings of consolidated subsidiaries and equity method investees Income (Loss) from Equity Method Investments Leases [Abstract] Leases [Abstract] Increase of unrecognized tax benefits taken in prior years Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions Accounts payable Increase (Decrease) in Accounts Payable Singapore SINGAPORE Stock-based Compensation Expense [Abstract] Share-Based Payment Arrangement, Noncash Expense [Abstract] Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Basic (in dollars per share) Basic (in dollars per share) Earnings Per Share, Basic Total inventories, net Inventory, Gross Ninebell Co., Ltd (“Ninebell”) Ninebell Company Limited [Member] Name of the companies principal material supplier. Worldwide changes in unrecognized tax benefits Effective Income Tax Rate Reconciliation, Tax Contingency, Percent Total gross deferred tax assets Deferred Tax Assets, Gross Inventory Disclosure [Abstract] Inventory Disclosure [Abstract] Short-term borrowings (note 8) Short-Term Debt Cumulative Effect, Period of Adoption [Domain] Cumulative Effect, Period of Adoption [Domain] Purchase of intangible assets included in other long-term assets Purchase Of Intangible Assets Included In Other Noncurrent Assets Purchase Of Intangible Assets Included In Other Noncurrent Assets Number of votes for each share entitled Voting Rights per Share Number of votes entitled for each share of common stock. First-Tools First-Tools [Member] Finished goods inventory shipped to existing or prospective customers. Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Research and Development Costs Research and Development Expense, Policy [Policy Text Block] Short-term investments Debt Securities, Trading, and Equity Securities, FV-NI ACM Lingang ACM Lingang [Member] ACM Lingang Share-based compensation expense Share-Based Payment Arrangement, Expense Subsidies recognized as other income Government Subsidies Recognized as Other Income Amount of government subsides recognized as other income during the period. Current assets: Current assets: Assets, Current [Abstract] Forfeited/cancelled (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period Total liabilities and equity Liabilities and Equity Number of Option Share [Roll Forward] Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Appropriation to statutory surplus reserves Appropriation to Statutory Surplus Reserves Amount allocated to statutory surplus reserves. General and administrative expense General and Administrative Expense [Member] Long-Term Investment [Table] Long-Term Investment [Table] A container table for all schedule of long-term investment. Accounting Policies [Abstract] Accounting Policies [Abstract] Maturities of Outstanding Lease Liabilities for Operating Leases Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Pay vs Performance Disclosure [Line Items] Present value of lease liabilities Operating Lease, Liability Line of Credit Facility, Lender [Domain] Line of Credit Facility, Lender [Domain] Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Loan from China Merchants Bank China Merchants Bank [Member] Name of the lender. Other long-term liabilities Other Liabilities, Noncurrent Deferred revenue Increase (Decrease) in Deferred Revenue Loan from Agricultural Bank of China Agricultural Bank Of China [Member] Agricultural Bank Of China Other payables and accrued expenses Increase (Decrease) in Other Accounts Payable and Accrued Liabilities Four Customers Four Customers [Member] Four Customers Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Current portion of long-term borrowings (note 10) Less: Current portion Long-Term Debt, Current Maturities Company Selected Measure Amount Company Selected Measure Amount 2028 Lessee, Operating Lease, Liability, to be Paid, Year Three Increase (Decrease) in Other Noncurrent Liabilities Increase (Decrease) in Other Noncurrent Liabilities Comprehensive income attributable to ACM Research, Inc. Comprehensive Income (Loss), Net of Tax, Attributable to Parent Name Measure Name Components of Income Before Income Tax Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block] 2023 Stock Option Incentive Plan 2023 Stock Option Incentive Plan [Member] 2023 Stock Option Incentive Plan Class of Stock [Line Items] Class of Stock [Line Items] Consolidation, Less-than-Wholly-Owned Subsidiary, Parent Ownership Interest, Effect of Change [Table] Consolidation, Less-than-Wholly-Owned Subsidiary, Parent Ownership Interest, Effect of Change [Table] Unrealized Gain (Loss) on Investments Unrealized Gain (Loss) on Investments [Table Text Block] Total borrowings Total borrowings Long-Term Debt Total assets Assets Condensed Statements of Cash Flows Condensed Cash Flow Statement [Table Text Block] Loan 1 Loan One [Member] Amount borrowed from the bank on June 2021 with the annual interest rate is 2.6%. Cash and Cash Equivalents and Restricted Cash Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Shanghai Syncrystalline Silicon Materials Co., Ltd Shanghai Syncrystalline Silicon Materials Co., Ltd [Member] Shanghai Syncrystalline Silicon Materials Co., Ltd Geographical [Domain] Geographical [Domain] Income Taxes Income Tax, Policy [Policy Text Block] Cash flows from operating activities: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] R&D deduction Effective Income Tax Rate Reconciliation, Tax Credit, Research, Percent Concentration Risk Type [Axis] Concentration Risk Type [Axis] INVENTORIES, NET Inventory Disclosure [Text Block] Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Operating lease right-of-use assets obtained in exchange for new operating lease liabilities Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Subsidies recognized as reductions of relevant expenses Government Subsidies Recognized as Reductions of Relevant Expenses Amount of government subsides recognized as reductions of relevant expenses. Warranty Obligations [Roll Forward] Warranty Obligations [Roll Forward] A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. Cumulative Effect, Period of Adoption, Adjustment Cumulative Effect, Period of Adoption, Adjustment [Member] Significant Other Observable Inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Document Financial Statement Error Correction Document Financial Statement Error Correction [Flag] State and local income taxes, net of federal income tax effect* Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount Income Tax Examination [Line Items] Income Tax Examination [Line Items] SHORT-TERM BORROWINGS Short-Term Debt [Text Block] Investment - equity method Equity Method Investments Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Related Party Related Party [Member] Components of Income Tax Benefit (Expense) Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Accruals (U.S.) Deferred Tax Asset, Tax Deferred Expense, Reserve and Accrual, Accounts Receivable, Allowance for Credit Loss Plan Name [Axis] Plan Name [Axis] Property, Plant and Equipment, Net Property, Plant and Equipment, Policy [Policy Text Block] Document Information [Table] Document Information [Table] PEO PEO [Member] Global intangible low-taxed income Effective Income Tax Rate Reconciliation, GILTI, Amount Interest income Investment Income, Interest Income before income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest CleanChip Technologies Limited ("CleanChip") CleanChip Technologies Limited [Member] Entity owned or controlled by another entity. Transfer from other non-current assets to long term investment Transfer From Other Non-current Assets To Long Term Investment Transfer From Other Non-current Assets To Long Term Investment United States UNITED STATES Net changes in operating assets and liabilities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Warranty Obligations Schedule of Product Warranty Liability [Table Text Block] Change in valuation allowance Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount Property and equipment Deferred Tax Liabilities, Property, Plant and Equipment Expected volatility rate (as a percent) Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate Retained Earnings Retained Earnings [Member] Income Tax Jurisdiction [Axis] Income Tax Jurisdiction [Axis] Share-Based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Cash, cash equivalents and restricted cash at beginning of year Cash, cash equivalents and restricted cash at end of year Cash, cash equivalents and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Income Statement [Abstract] Income Statement [Abstract] Individual income tax payable Taxes Payable, Current Product and Service [Domain] Product and Service [Domain] Customer Concentration Risk Customer Concentration Risk [Member] Vested and exercisable (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Exercise Price Net income Net income Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Customer Three Customer Three [Member] Customer Three Accounting Standards Update [Extensible Enumeration] Accounting Standards Update [Extensible Enumeration] City Area Code City Area Code Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Debt Securities, Trading, and Equity Securities, FV-NI [Table] Debt Securities, Trading, and Equity Securities, FV-NI [Table] ACM Research Korea CO., LTD. ("ACM Korea") ACM Research Korea CO., LTD [Member] Entity owned or controlled by another entity. Accounts Receivables and Contract Liabilities Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Total deferred tax liabilities Deferred Tax Liabilities, Net Cash flows from investing activities: Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] General and administrative General and administrative expenses General and Administrative Expense Long-lived assets Long-Lived Assets Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Customer Two Customer Two [Member] Customer Two FIN-48 payable (note 16) FIN-48 payable Income Taxes, Current, Payable and Deferred Tax Liabilities Carrying amount as of the balance sheet date of the unpaid sum of the known and estimated amounts payable. Related Party Transaction [Abstract] Related Party Transactions [Abstract] Lease cost Lease, Cost Cost of revenue Cost of Sales [Member] Utilized Product Warranty Accrual Utilized The amount of utilized product warranty accrual. Components of Lease Expense Lease, Cost [Table Text Block] ACM Research (Shanghai), Inc. ("ACM Shanghai") ACM Research (Shanghai), Inc. [Member] Entity owned or controlled by another entity. Other Assets, Noncurrent Disclosure [Abstract] Other Assets, Noncurrent Disclosure [Abstract] U.S. federal Deferred Federal Income Tax Expense (Benefit) Aggregate Changes in Balance of Gross Unrecognized Tax Benefits [Abstract] Unrecognized Tax Benefits [Roll Forward] Auditor Name Auditor Name Share-based payment awards Effective Income Tax Rate Reconciliation, Tax Expense (Benefit), Share-Based Payment Arrangement, Amount Concentration Risk [Table] Concentration Risk [Table] Manufacturing equipment Equipment [Member] Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions and Methodology [Abstract] Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions and Methodology [Abstract] Supplemental disclosure of cash flow information: Supplemental Cash Flow Information [Abstract] Other Performance Measure, Amount Other Performance Measure, Amount Weighted Average Exercise Price [Abstract] Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Inventory [Line Items] Inventory [Line Items] Related Party [Domain] Related and Nonrelated Parties [Domain] Amount Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract] Fair Value Measurement Fair Value of Financial Instruments, Policy [Policy Text Block] Hanguk ACM CO., LTD Hanguk ACM CO., LTD. [Member] Entity owned or controlled by another entity. Annual total taxes Annual Total Taxes All taxes including value-added taxes, corporate income tax, personal income taxes, urban maintenance and construction taxes, education surcharges, stamp taxes, and vehicle and shipping taxes. Other permanent difference Effective Income Tax Rate Reconciliation, Other Permanent Difference, Percent Effective Income Tax Rate Reconciliation, Other Permanent Difference, Percent Investment in consolidated subsidiaries and equity method investees Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures Net cash used in investing activities Net cash used in investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Interest paid Interest Paid, Excluding Capitalized Interest, Operating Activity Document Fiscal Year Focus Document Fiscal Year Focus Lender Name [Axis] Lender Name [Axis] Proceeds from disposal of long-term investments Proceeds from Sale of Long-Term Investments Operating lease right-of-use assets, net (note 19) Operating Lease, Right-of-Use Asset Effective income tax rate Effective Income Tax Rate Reconciliation, Percent Operating lease cost Operating Lease, Cost Reductions for tax positions related to prior years Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions ECP (front-end and packaging), Furnace and Other Technologies ECP Front End And Packaging Furnace And Other Technologies [Member] Goods and Services produced, developed and distributed by the entity. Plan Name [Domain] Plan Name [Domain] Cost not yet recognized Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition ACM Research (Singapore) PTE. Ltd. ("ACM Singapore") ACM Research (Singapore) PTE. LTD. [Member] Entity owned or controlled by another entity. Exercise of stock options (in shares) Exercised (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Less: valuation allowance Deferred Tax Assets, Valuation Allowance Equity [Abstract] Equity [Abstract] Upward price adjustment Equity Securities without Readily Determinable Fair Value, Upward Price Adjustment, Cumulative Amount SEGMENT INFORMATION Segment Reporting Disclosure [Text Block] Shengyi Micro Semiconductor (Shanghai) Co., Ltd. Shengyi Micro Semiconductor (Shanghai) Co., Ltd. [Member] Shengyi Micro Semiconductor (Shanghai) Co., Ltd. Statutory Surplus Reserve Statutory Surplus Reserve [Policy Text Block] Disclosure of accounting policy for statutory surplus reserve. U.S. federal Current Federal Tax Expense (Benefit) Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Total U.S. Income Tax Paid, Domestic, After Refund Received Income Tax Paid, Domestic, After Refund Received Change in valuation allowance Effective Income Tax Rate Reconciliation, Change In Valuation Allowance, Percent Effective Income Tax Rate Reconciliation, Change In Valuation Allowance, Percent Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Advanced Packaging (excluding ECP), Services & Spares Advanced Packaging (exclude ECP), Services & Spares [Member] Goods and Services produced, developed and distributed by the entity. Leases Lessee, Leases [Policy Text Block] Deferred tax assets (note 16) Deferred Income Tax Assets, Net Repurchase of ACM Shanghai's shares Stock Repurchased During Period, Value Depreciation expense Depreciation, Depletion and Amortization Schedule of Segment Reporting Information, by Segment [Table] Schedule of Revenues from External Customers and Long-Lived Assets [Table] Finished goods Inventory, Finished Goods, Gross ACM Research ( Lingang), Inc. ("ACM Lingang") ACM Research (Lingang), Inc [Member] ACM Research (Lingang), Inc Statutory rate differential Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount Arrangement Duration Trading Arrangement Duration Components of Short-Term Investments Debt Securities, Trading, and Equity Securities, FV-NI [Table Text Block] Expected volatility rate, maximum (as a percent) Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum Customer Four Customer Four [Member] Customer Four Subpart F Effective Income Tax Rate Reconciliation, Cross-Border, Subpart F, Percent Effective Income Tax Rate Reconciliation, Cross-Border, Subpart F, Percent Number of renewal options Lessee, Operating Lease, Number Of Renewal Options Lessee, Operating Lease, Number Of Renewal Options Local Phone Number Local Phone Number Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Accounts receivable Accounts Receivable, before Allowance for Credit Loss, Current Fair value of common share (in dollars per share) Share Price Thereafter Long-Term Debt, Maturity, after Year Five STOCK-BASED COMPENSATION Share-Based Payment Arrangement [Text Block] Assets Assets [Abstract] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Debt Instrument [Axis] Debt Instrument [Axis] Equity: Equity, Attributable to Parent [Abstract] Proceeds from short-term borrowings Proceeds from Short-Term Debt Investment, Name [Axis] Investment, Name [Axis] Long-term operating lease liabilities Operating Lease, Liability, Noncurrent Entity Voluntary Filers Entity Voluntary Filers Non-cash investing activities: Non-cash investing items [Abstract] Non-cash investing items [Abstract] Statutory Surplus Reserve Retained Earnings, Appropriated [Member] Property, Plant and Equipment [Abstract] Property, Plant and Equipment [Abstract] Entity Registrant Name Entity Registrant Name Other long-term assets Increase (Decrease) in Other Noncurrent Assets Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] FIN-48 payable Increase (Decrease) in Payable and Deferred Tax Liabilities The increase (decrease) during the period in the amount due for taxes based on the reporting entity's earnings or attributable to the entity's income earning process within a given jurisdiction. Government Subsidies [Abstract] Government Subsidies [Abstract] Government Subsidies [Abstract] Assets Assets, Fair Value Disclosure Equity investments without readily determinable fair value using the measurement alternative Equity Securities without Readily Determinable Fair Value, Amount Number of operating segments Number of Operating Segments Effect of cross-border tax laws Effective Income Tax Rate Reconciliation, Cross-Border Tax Effect, Amount [Abstract] Income Tax, Examination [Table] Income Tax, Examination [Table] Related Party [Axis] Related and Nonrelated Parties [Axis] Cumulative Effect, Period of Adoption [Axis] Cumulative Effect, Period of Adoption [Axis] Tax Credits Effective Income Tax Rate Reconciliation, Tax Credit, Percent [Abstract] Long-term time deposits (note 2) Deposits Assets, Noncurrent Restatement Determination Date: Restatement Determination Date [Axis] Foreign Deferred Foreign Income Tax Expense (Benefit) Accounts Receivable Accounts Receivable [Member] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Capital contribution by non-controlling shareholder Noncontrolling Interest, Increase from Subsidiary Equity Issuance Carrying Value of Borrowings Fair Value, Liabilities Measured on Recurring Basis [Table Text Block] Name Trading Arrangement, Individual Name Short-Term Debt [Table] Short-Term Debt [Table] Stock-based compensation (offshore) Deferred Tax Assets, Property, Plant and Equipment Name Awards Close in Time to MNPI Disclosures, Individual Name Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] ICFR Auditor Attestation Flag ICFR Auditor Attestation Flag Stock-based compensation APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] Direct or Indirect Interests of Subsidiaries Direct or Indirect Interests in Subsidiaries [Table Text Block] Tabular disclosure of the entity's subsidiaries and information of their direct or indirect interests with date, state of incorporation information. Condensed Statements of Operations Condensed Income Statement [Table Text Block] PRC Foreign Tax Jurisdiction [Member] Auditor Firm ID Auditor Firm ID Statement of Income Location, Balance [Axis] Statement of Income Location, Balance [Axis] Foreign Income (Loss) from Continuing Operations before Income Taxes, Foreign Line of credit facility, remaining borrowing capacity Line of Credit Facility, Remaining Borrowing Capacity Cash and Cash Equivalent [Table] Cash and Cash Equivalent [Table] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Inventories Increase (Decrease) in Inventories ACM Research (Beijing), Inc. ("ACM Beijing") ACM Research (Beijing), Inc. [Member] Entity owned or controlled by another entity. Less: Total accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Basic and Diluted Net Income per Common Share Earnings Per Share, Policy [Policy Text Block] Cash payments for procurement of goods and services Payments to Suppliers and Employees Loan from Industrial and Commercial Bank of China Industrial and Commercial Bank of China [Member] Industrial and Commercial Bank of China All Executive Categories All Executive Categories [Member] Deferred Tax Assets Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Long-Term Investment [Line Items] Long-Term Investment [Line Items] Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Common stock Common Stock, Value, Issued ACM Shanghai ACM Shanghai [Member] Entity owned or controlled by ACM Shanghai. Short-term investments (note 12) Short-Term Investments Commitments and contingencies (note 18) Commitments and Contingencies Loan from China Everbright Bank China Everbright Bank [Member] China Everbright Bank Forfeited/cancelled (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Nonvested Options Forfeited, Weighted Average Grant Date Fair Value Comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Non-controlling Interests Noncontrolling Interest [Member] Noncontrolling interests Equity Method Investments [Policy Text Block] Ownership percentage Equity Method Investment, Ownership Percentage Stock compensation Effective Income Tax Rate Reconciliation, Stock Compensation, Percent Effective Income Tax Rate Reconciliation, Stock Compensation, Percent Short-Term Debt [Line Items] Short-Term Debt [Line Items] Concentration Risk [Line Items] Concentration Risk [Line Items] Deferred tax assets, net Deferred Tax Assets, Net Long-Lived Assets by Geographic Region Long-Lived Assets by Geographic Areas [Table Text Block] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Prepayment for purchase of long-term investment Purchase Of Long Term Investment Included In Other Noncurrent Assets Purchase Of Long Term Investment Included In Other Noncurrent Assets Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Aggregate Changes in Balance of Gross Unrecognized Tax Benefits Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] Reserves and other (offshore) Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Reserves Cash and Cash Equivalent [Abstract] Cash and Cash Equivalent [Abstract] All Individuals All Individuals [Member] Purchase of property and equipment Payments to Acquire Property, Plant, and Equipment Name Forgone Recovery, Individual Name Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Inventory provision Increase (Decrease) In Provision For Inventory Increase (Decrease) In Provision For Inventory Foreign corporate tax rate Foreign corporate tax rate Percentage of foreign tax rate. Purchase of time deposits Payments to Acquire Restricted Certificates of Deposit Customer One Customer One [Member] Customer One Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Geographical [Axis] Geographical [Axis] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Total contract liabilities Deferred Revenue, Current Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Geographic Areas, Long-Lived Assets [Abstract] Geographic Areas, Long-Lived Assets [Abstract] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Title of 12(b) Security Title of 12(b) Security Global intangible low-taxed income Effective Income Tax Rate Reconciliation, GILTI, Percent U.S. Income Taxes Paid, Net [Abstract] Foreign tax credits Effective Income Tax Rate Reconciliation, Tax Credit, Foreign, Amount Net income per common stock (note 2): Net income per share of common stock: Earnings Per Share [Abstract] Accrued income tax penalties Unrecognized Tax Benefits, Income Tax Penalties Accrued Conversion of stock, converted (in shares) Conversion of Stock, Shares Converted Dividends from equity investee Proceeds from Equity Method Investment, Distribution, Return of Capital Advances from customers Increase (Decrease) in Contract with Customer, Liability Effective interest held Subsidiaries Ownership Percentage The percentage of ownership of common stock or equity participation of subsidiaries. Audit Information [Abstract] Audit Information Exercised (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Award Timing Disclosures [Line Items] ACM-Wooil Microelectronics (Shanghai) Co., Ltd. ACM-Wooil Microelectronics (Shanghai) Co., Ltd. [Member] ACM-Wooil Microelectronics (Shanghai) Co., Ltd. Time Deposits Time Deposits [Policy Text Block] Disclosure of accounting policy for time deposits. Inventory Schedule of Inventory, Current [Table Text Block] ACM Research (Cayman), Inc. ACM Research (Cayman), Inc. [Member] Entity owned or controlled by another entity. First-Tools, Customer Ownership First-Tools, Customer Ownership [Member] First-Tools, Customer Ownership COMMON STOCK Equity [Text Block] U.S. state Deferred State and Local Income Tax Expense (Benefit) Net income attributable to ACM Research, Inc. Net income Net Income (Loss) Attributable to Parent Subsequent Event [Table] Subsequent Event [Table] Others Other Accrued Liabilities, Current Effective Income Tax Rate Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Accounts Receivable, Allowance for Credit Loss [Roll Forward] Accounts Receivable, Allowance for Credit Loss [Roll Forward] Other permanent difference Effective Income Tax Rate Reconciliation, Other Adjustments, Percent Non-cash financing activities: Noncash Financing Items [Abstract] Noncash Financing Items [Abstract] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Adoption Date Trading Arrangement Adoption Date Payable for investments Payments For Investments Payments For Investments Reclassifications Reclassification, Comparability Adjustment [Policy Text Block] Shares issued (in dollars per share) Shares Issued, Price Per Share Classes of common stock outstanding Number Of Classes Of Common Stock Outstanding Number Of Classes Of Common Stock Outstanding Ninebell Co., Ltd (“Ninebell”) Ninebell Company Limited, ACM Shanghai [Member] Ninebell Company Limited, ACM Shanghai Long-Term Investments Long-Term Investment [Table Text Block] Tabular disclosure of long-term investment. Lease term Lessee, Operating Lease, Term of Contract Product Warranty Liability [Line Items] Product Warranty Liability [Line Items] Customer [Axis] Customer [Axis] Loss from operations Operating Income (Loss) Retained earnings Retained Earnings (Accumulated Deficit) Components of Stock-based Compensation Expense Share-Based Payment Arrangement, Cost by Plan [Table Text Block] Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Product Warranty Liability [Table] Product Warranty Liability [Table] Class of Stock [Axis] Class of Stock [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Advances to related parties (note 13) Increase (Decrease) in Due to Related Parties Other Effective Income Tax Rate Reconciliation, Cross-Border, Other, Amount Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Payables and Accruals [Abstract] Payables and Accruals [Abstract] Other (expense) income, net Other Nonoperating Income (Expense) Statement [Table] Statement [Table] Total deferred tax benefit (expense) Deferred Income Tax Expense (Benefit) Adjustments to reconcile net income to net cash (used in) provided by operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Cash flows from financing activities: Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Nondeductible Items Effective Income Tax Rate Reconciliation, Nondeductible Expense, Percent Revenue Benchmark Revenue Benchmark [Member] Other foreign jurisdictions Foreign Tax Jurisdiction, Other [Member] Shares issued (in shares) Shares, Issued All Adjustments to Compensation All Adjustments to Compensation [Member] Amendment Flag Amendment Flag Sale of stock (in RMD and USD per share) Sale of Stock, Price Per Share Condensed Income Statements, Captions [Line Items] Condensed Income Statements, Captions [Line Items] Termination Date Trading Arrangement Termination Date Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Weighted average discount rate Operating Lease, Weighted Average Discount Rate, Percent Summary of Share Option Activities Share-Based Payment Arrangement, Option, Activity [Table Text Block] Related parties accounts payable (note 13) Increase (Decrease) in Due from Related Parties Basic (in shares) Weighted average shares outstanding, basic (in shares) Weighted Average Number of Shares Outstanding, Basic Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table] Inventory write-down Inventory Write-down Unrecognized tax benefits that would impact effective tax rate Unrecognized Tax Benefits that Would Impact Effective Tax Rate Basic and Diluted Net Income per Common Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Vested and exercisable (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number Subsequent Events [Abstract] Segment Reporting [Abstract] Segment Reporting [Abstract] Cost of revenue, including cost of revenue from related parties of $62,498, $39,313, and $31,240 for the years ended December 31, 2025, 2024, and 2023, respectively (note 13) Cost of revenue, related party Cost of revenue Cost of Revenue Debt Disclosure [Abstract] Debt Disclosure [Abstract] Property, Plant and Equipment, Net [Abstract] Property, Plant and Equipment, Gross [Abstract] Income Tax Authority, Name [Axis] Income Tax Authority, Name [Axis] Inventory [Abstract] Inventory, Net [Abstract] Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Consolidated Entities [Axis] Consolidated Entities [Axis] Government Subsidies Government Subsidies [Policy Text Block] Disclosure of accounting policy for government subsidies. Manufacturing equipment Manufacturing Equipment [Member] Equipment used for the primary purpose of manufacturing the product. Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross Use of Estimates Use of Estimates, Policy [Policy Text Block] Loans from Bank of China Bank of China [Member] Name of the lender. Construction in progress Construction in Progress, Gross Other Long-term Assets Schedule of Other Assets, Noncurrent [Table Text Block] Total U.S. deferred tax benefit (expense) Deferred Federal, State and Local, Tax Expense (Benefit) SUBSEQUENT EVENTS Subsequent Events [Text Block] Foreign currency translation adjustment, net of tax Foreign currency translation adjustment Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Insider Trading Arrangements [Line Items] Forfeited/cancelled (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Purchases of materials Related Party Transaction, Purchases from Related Party Proceeds from redemption and maturity of time deposits Increase (Decrease) of Long-term Time Deposits Increase (Decrease) of Long-term Time Deposits Raw materials Inventory, Raw Materials, Gross Total liabilities Liabilities ACM Shanghai dividends Payments of Ordinary Dividends, Noncontrolling Interest Wooil Flucon Co., ("Wooil") Wooil Flucon Company Limited [Member] Name of the companies components suppliers. Long-Term Debt, by Current and Noncurrent [Abstract] Long-Term Debt, by Current and Noncurrent [Abstract] Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Increase of unrecognized tax benefits related to current year Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Computer and office equipment Computer and Office Equipment [Member] The long lived, depreciable assets and tangible personal property used in an office setting. 2019 Stock Option Incentive Plan 2019 Stock Option Incentive Plan [Member] 2019 Stock Option Incentive Plan Transfer from inventories to property, plant and equipment Transfer From Inventory To Property, Plant And Equipment Transfer From Inventory To Property, Plant And Equipment Issuance of shares by ACM Shanghai Stock Issued During Period, Value, New Issues Non-Employee Option Share-based Payment Arrangement, Non Employee Stock Option [Member] Share-based payment arrangement of non employee stock option granting right, subject to vesting and other restrictions, to purchase or sell certain number of shares at predetermined price for specified period of time. Transfer from property, plant and equipment to inventory Transfer From Property, Plant And Equipment To Inventory Transfer From Property, Plant And Equipment To Inventory Counterparty Name [Axis] Counterparty Name [Axis] Available-for-sale debt securities Estimated fair value Debt Securities, Available-for-Sale Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] Accounting Standards Update 2016-13 [Member]