SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Significant Accounting Policies [Text Block] Sotheara Cheav [Member] Sotheara Cheav Statistical Measurement [Domain] Statistical Measurement [Domain] Financial Instruments Investment, Policy [Policy Text Block] Non-cash operating lease cost Operating Lease, Cost, Non-Cash Operating Lease, Cost, Non-Cash Debt Securities, Available-for-Sale Debt Securities, Available-for-Sale [Table Text Block] Long-Term Investments [Table] Long-Term Investments [Table] A container table for all schedule of long-term investments. Service Period Based Service Period Based Approach [Member] Fair value of option grants in period, valuation model assumptions based on service period. Restricted cash Restricted Cash, Current 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. Entity File Number Entity File Number Additional Paid- in Capital Additional Paid-in Capital [Member] Income from equity method investments Income from equity method investments Income (Loss) from Equity Method Investments Tabular List, Table Tabular List [Table Text Block] Number of outstanding legal proceedings Number of Outstanding Legal Proceedings Number of outstanding legal proceeding regarding securities class action. Recently Adopted Accounting Pronouncements and Recently issued accounting pronouncements not yet adopted New Accounting Pronouncements, Policy [Policy Text Block] Related Party Balances and Transactions Schedule of Related Party Transactions [Table Text Block] Provision for (reversal of) credit loss Accounts Receivable, Credit Loss Expense (Reversal), Net Accounts Receivable, Credit Loss Expense (Reversal), Net Concentration of Credit Risk [Abstract] Concentration of Credit Risk [Abstract] Concentration of Credit Risk [Abstract] Accounts payable Increase (Decrease) in Accounts Payable Retained Earnings (Accumulated Deficit) [Abstract] Retained Earnings (Accumulated Deficit) [Abstract] Fair Value, by Balance Sheet Grouping Fair Value, by Balance Sheet Grouping [Table Text Block] 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 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] Total inventories, net Inventory, Gross Ninebell Co., Ltd (“Ninebell”) Ninebell Company Limited [Member] Name of the companies principal material supplier. REVENUE FROM CONTRACTS WITH CUSTOMERS Revenue from Contract with Customer [Text Block] Schedule of Stock by Class [Table] Stock, Class of Stock [Table] Inventory Disclosure [Abstract] Inventory Disclosure [Abstract] Short-term borrowings (note 7) Short-Term Debt Cash and Cash Equivalents Schedule of Cash and Cash Equivalents [Table Text Block] 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 Number of votes for each share entitled Voting Rights per Share Number of votes entitled for each share of common stock. Employee Share Option Share-Based Payment Arrangement, Option [Member] First-Tools First-Tools [Member] Finished goods inventory shipped to existing or prospective customers. Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Grantee Status [Domain] Grantee Status [Domain] Other comprehensive income (loss), foreign currency translation adjustment, tax Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax Short-term investments Debt Securities, Trading, and Equity Securities, FV-NI Total ACM Research, Inc. stockholders’ equity Equity, Attributable to Parent Insider Trading Policies and Procedures [Line Items] Stock-based compensation expense Share-Based Payment Arrangement, Expense Common stock, shares authorized (in shares) Common Stock, Shares Authorized Property, Plant and Equipment Property, Plant and Equipment [Table Text Block] Current assets: Assets, Current [Abstract] Total liabilities and equity Liabilities and Equity Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Concentration of Credit Risk Concentration Risk, Credit Risk, Policy [Policy Text Block] Liabilities and Equity Liabilities and Equity [Abstract] Cover [Abstract] Cover [Abstract] Cash and cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Maximum Maximum [Member] General and administrative expense General and Administrative Expense [Member] Less: Net income attributable to non-controlling interests Net Income (Loss) Attributable to Noncontrolling Interest Accounting Policies [Abstract] Accounting Policies [Abstract] Intangible assets, net Finite-Lived Intangible Assets, Net Concentration Risk Type [Domain] Concentration Risk Type [Domain] 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] Pay vs Performance Disclosure [Line Items] Land, Buildings, And Plants Land, Buildings, And Plants [Member] Land, Buildings, And Plants 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 Line of Credit Facility, Lender [Domain] Line of Credit Facility, Lender [Domain] Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Entity Shell Company Entity Shell Company Land use rights period Land Use Rights Period Period after the land use right is obtained, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. 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 Agricultural Bank of China Agricultural Bank of China [Member] Agricultural Bank of China Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Other payables and accrued expenses Increase (Decrease) in Other Accounts Payable and Accrued Liabilities Four Customers Four Customers [Member] Four Customers ACM Research ( Lingang), Inc. ("ACM Lingang") ACM Research ( Lingang), Inc. ("ACM Lingang") [Member] ACM Research ( Lingang), Inc. ("ACM Lingang") Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Current portion of long-term borrowings (note 9) Less: Current portion Long-Term Debt, Current Maturities Company Selected Measure Amount Company Selected Measure Amount 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] Other long-term 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 Summary of Components of Stock-based Compensation Expense Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Current portion of operating lease liabilities Operating Lease, Liability, Current Class of Stock [Line Items] Class of Stock [Line Items] Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Table] Consolidation, Less-than-Wholly-Owned Subsidiary, Parent Ownership Interest, Effect of Change [Table] Other payables and accrued expenses (note 8) Other payables and accrued expenses (note 8) Other Accounts Payable and Accrued Liabilities Document Fiscal Period Focus Document Fiscal Period Focus Award Timing Method Award Timing Method [Text Block] Unrealized Gain (Loss) on Trading Securities Unrealized Gain (Loss) on Investments [Table Text Block] Award Type [Axis] Award Type [Axis] Total Long-term debt Long-Term Debt Total assets Assets Long-Term Investments [Line Items] Long-Term Investments [Line Items] Long-Term Investments [Line Items] Investment, Name [Domain] Investment, Name [Domain] Trading Symbol Trading Symbol Cash and Cash Equivalents and Restricted Cash Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Geographical [Domain] Geographical [Domain] 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 Annual total taxes, percentage Annual Total Taxes, Percentage Annual Total Taxes, Percentage Entity Address, City or Town Entity Address, City or Town Cash flows from operating activities: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Unrealized losses recognized during the reporting period on short-term investments still held at March 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 Concentration Risk Type [Axis] Concentration Risk Type [Axis] INVENTORIES, NET Inventory Disclosure [Text Block] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Income Statement Location [Domain] Statement of Income Location, Balance [Domain] Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Assets Assets, Fair Value Disclosure [Abstract] Statutory Accounting Practices [Line Items] Statutory Accounting Practices [Line Items] Entity Emerging Growth Company Entity Emerging Growth Company 2029 Long-Term Debt, Maturity, Year Three Purchase of intangible assets Payments to Acquire Intangible Assets Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding 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] Significant Other Observable Inputs (Level 2) Fair Value, Inputs, Level 2 [Member] SHORT-TERM BORROWINGS Short-Term Debt [Text Block] Equity-method investments Equity Method Investments Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Related Party Related Party [Member] Beginning balance (in shares) Ending balance (in shares) Common stock outstanding (in shares) Common Stock, Shares, Outstanding Provision for (reversal of) credit losses Accounts Receivable, Credit Loss Expense (Reversal) Income Tax Benefit (Expense) Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Plan Name [Axis] Plan Name [Axis] Payments for (proceeds from) businesses and interest in affiliates, financing activities, net of tax Payments for (Proceeds from) Businesses and Interest in Affiliates, Financing Activities, Net Of Tax Payments for (Proceeds from) Businesses and Interest in Affiliates, Financing Activities, Net Of Tax Document Information [Table] Document Information [Table] PEO PEO [Member] 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 Accrued Machine Sales Fees, Current Interest income Investment Income, 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 Income taxes payable (note 15) Accrued Income Taxes, Current 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] 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. Schedule of Product Warranty Liability Schedule of Product Warranty Liability [Table Text Block] Volatility Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate Retained Earnings Retained Earnings [Member] Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Income Tax Authority [Axis] Income Tax Jurisdiction [Axis] 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. Share-Based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Cash, cash equivalents and restricted cash at beginning of period Cash, cash equivalents and restricted cash at end of period Cash, cash equivalents and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Income Statement [Abstract] Income Statement [Abstract] Income tax expense (note 15) Total income tax expense 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] Individual income tax payable Taxes Payable, Current Balance at beginning of period Balance at end of period Standard Product Warranty Accrual Document Information [Line Items] Document Information [Line Items] Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Product and Service [Domain] Product and Service [Domain] Customer Concentration Risk Customer Concentration Risk [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Total cost Property, Plant and Equipment, Gross Purchase of long-term investments Payments to Acquire Long-Term Investments 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] 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 exercise of stock options Proceeds from Stock Options Exercised City Area Code City Area Code Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] 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] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] 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] Cash flows from investing activities: Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] General and administrative General and Administrative Expense Long-lived assets Long-Lived Assets Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Net cash (used in) provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation FIN-48 payable (note 15) 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. Repayments of short-term borrowings Repayments of Short-Term Debt Long-term investments (note 10) Long-Term Investments Related Party Transactions [Abstract] Related Party Transactions [Abstract] ACM Research (Wuxi), Inc. ("ACM Wuxi") ACM Research (Wuxi), Inc. [Member] Entity owned or controlled by another entity. Assumptions Used to Determine Fair Value of Options Granted Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Cost of revenue Cost of Sales [Member] Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] PEO Total Compensation Amount PEO Total Compensation Amount Property, Plant and Equipment, Net, by Type [Abstract] Property, Plant and Equipment, Net, by Type [Abstract] ACM Research (Shanghai), Inc. ("ACM Shanghai") ACM Shanghai ACM Research (Shanghai), Inc. [Member] Entity owned or controlled by another entity. 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] Concentration Risk [Table] Concentration Risk [Table] Number of reportable segments Number of Reportable Segments Manufacturing and testing 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] Company A Company A [Member] Company A Supplemental disclosure of cash flow information: Supplemental Cash Flow Information [Abstract] Three Customers Three Customers [Member] Information by number of customers. Other Performance Measure, Amount Other Performance Measure, Amount Inventory [Line Items] Inventory [Line Items] Entity Address, State or Province Entity Address, State or Province Related Party [Domain] Related and Nonrelated Parties [Domain] Total current liabilities Liabilities, Current Inventory [Axis] Inventory [Axis] Individual: Individual [Axis] 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. Other receivables Increase (Decrease) in Other Receivables 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. Income Tax Authority [Domain] Income Tax Jurisdiction [Domain] Research and development expense Research and Development Expense [Member] 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] SHORT-TERM INVESTMENTS Trading Securities [Text Block] The entire disclosure for trading securities. Interest paid Interest Paid, Excluding Capitalized Interest, Operating Activity Capital contribution by non-controlling shareholder Proceeds from Noncontrolling Interests Document Fiscal Year Focus Document Fiscal Year Focus Lender Name [Axis] Lender Name [Axis] Operating lease right-of-use assets, net Operating Lease, Right-of-Use Asset Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Repayments of long-term borrowings Repayments of Long-Term Debt Effective tax rate Effective Income Tax Rate Reconciliation, Percent Entity Interactive Data Current Entity Interactive Data Current 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 (in years) 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) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period ACM Research (CA), Inc. ("ACM California") ACM Research (CA), Inc. [Member] Entity owned or controlled by another entity. Stockholders’ equity: Equity [Abstract] SEGMENT INFORMATION Segment Reporting Disclosure [Text Block] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Shengyi Micro Semiconductor (Shanghai) Co., Ltd. Shengyi Micro Semiconductor (Shanghai) Co., Ltd. [Member] Shengyi Micro Semiconductor (Shanghai) Co., Ltd. Advances from employees for option exercises (1) Deferred Compensation Share-Based Arrangements, Liability, Current Long-Lived Tangible Asset [Axis] Long-Lived Tangible Asset [Axis] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Ownership [Domain] Ownership [Domain] 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. Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] STATUTORY SURPLUS RESERVE Statutory Surplus Reserve [Text Block] The entire disclosure for statutory surplus reserve. Deferred tax assets (note 15) Deferred Income Tax Assets, Net Depreciation and amortization expense Depreciation, Depletion and Amortization Other long-term assets Other Assets, Noncurrent Cost Debt Securities, Trading, Amortized Cost Movement in Standard Product Warranty Accrual [Roll Forward] Movement in Standard Product Warranty Accrual [Roll Forward] Customer [Domain] Customer [Domain] Entity Central Index Key Entity Central Index Key PEO Name PEO Name Schedule of Segment Reporting Information, by Segment [Table] Schedule of Revenues from External Customers and Long-Lived Assets [Table] Principal Payments for Outstanding Long-Term Loan Schedule of Maturities of Long-Term Debt [Table Text Block] 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] Finished goods Inventory, Finished Goods, Gross Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Comprehensive income: Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] Arrangement Duration Trading Arrangement Duration Components of Trading Securities Debt Securities, Trading, and Equity Securities, FV-NI [Table Text Block] Volatility maximum Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum Advances from customers Advances from customers Contract with Customer, Liability, Current Accrued warranty Product Warranty Accrual, Current Exercise Price Award Exercise Price Entity Filer Category Entity Filer Category Local Phone Number Local Phone Number Class of Stock [Domain] Class of Stock [Domain] 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 Inventory, Current [Table] Inventory, Current [Table] STOCK-BASED COMPENSATION Share-Based Payment Arrangement [Text Block] Assets Assets [Abstract] Long-term borrowings (note 9) Long-Term Debt, Excluding Current Maturities Description of Business [Abstract] Business Description [Abstract] Business Description [Abstract] Nonrelated Party Nonrelated Party [Member] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Debt Instrument [Axis] Debt Instrument [Axis] Long-Term Borrowings [Abstract] Long-Term Debt, Current and Noncurrent [Abstract] Equity: Equity, Attributable to Parent [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 Proceeds from short-term borrowings Proceeds from Short-Term Debt 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) Income AOCI Attributable to Parent [Member] Investment, Name [Axis] Investment, Name [Axis] Less: Allowance for credit losses Accounts Receivable, Allowance for Credit Loss, Current Long-term operating lease liabilities Operating Lease, Liability, Noncurrent Work-in-process Inventory, Work in Process, Gross Ownership [Axis] Ownership [Axis] 30514000 Retained Earnings, Appropriated [Member] Fair Value as of Grant Date Award Grant Date Fair Value 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. Long-Term Borrowings Schedule of Long-Term Debt Instruments [Table Text Block] Incremental common shares attributable to dilutive effect of share-based payment arrangements (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements 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 Document Quarterly Report Document Quarterly Report Total assets Assets, Fair Value Disclosure Deferred income taxes Deferred Income Taxes and Tax Credits Long-term debt, fair value Long-Term Debt, Fair Value Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Counterparty Name [Domain] Counterparty Name [Domain] Equity Securities without Readily Determinable Fair Value, Amount Equity Securities without Readily Determinable Fair Value, Amount Number of operating segments Number of Operating Segments Utilized Standard Product Warranty Accrual, Decrease for Payments Investments, All Other Investments [Abstract] Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Other Payables and Accrued Expenses Schedule of Accounts Payable and Accrued Liabilities [Table Text Block] Related Party [Axis] Related and Nonrelated Parties [Axis] Title Trading Arrangement, Individual Title Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Restatement Determination Date: Restatement Determination Date [Axis] Non-PEO NEO Non-PEO NEO [Member] Accounts Receivable Accounts Receivable [Member] Sale of ACM Shanghai's shares, net of tax/ Capital contribution by non-controlling shareholder Noncontrolling Interest, Increase from Subsidiary Equity Issuance Income Taxes [Abstract] Income Tax Expense (Benefit), Continuing Operations [Abstract] Land Land [Member] Name Trading Arrangement, Individual Name Award Type [Domain] Award Type [Domain] Schedule of Short-Term Debt [Table] Short-Term Debt [Table] Non-controlling interests Equity, Attributable to Noncontrolling Interest Equity Awards Adjustments Equity Awards Adjustments [Member] Leasehold improvement 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 Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Expected dividend rate 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 periods 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. 2030 and thereafter Long-Term Debt, Maturity, After Four and Thereafter Long-Term Debt, Maturity, After Four and Thereafter Deposit Assets [Line Items] Deposit Assets [Line Items] Deposit Assets [Line Items] Mainland China CHINA MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Name Awards Close in Time to MNPI Disclosures, Individual Name ACM Research (Chengdu), Inc. ("ACM Chengdu") ACM Research (Chengdu), Inc. [Member] ACM Research (Chengdu), Inc. Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Inventory [Domain] Inventory [Domain] 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] Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax 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. Sales and marketing Selling and Marketing Expense 2027 Long-Term Debt, Maturity, Year One Foreign Tax Authority Foreign Tax Jurisdiction [Member] Income Statement Location [Axis] Statement of Income Location, Balance [Axis] 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 Schedule of Cash and Cash Equivalents [Table] Cash and Cash Equivalent [Table] Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Inventories Increase (Decrease) in Inventories Inventories, net (note 5) Inventory, Net Minimum Minimum [Member] 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 Share of Common Stock Earnings Per Share, Policy [Policy Text Block] Company Selected Measure Name Company Selected Measure Name Cash payments for procurement of goods and services Payments to Suppliers and Employees Deposit Assets [Table] Deposit Assets [Table] Deposit Assets [Table] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Accounts payable Accounts Payable, Current Industrial and Commercial Bank of China Industrial and Commercial Bank of China [Member] Industrial and Commercial Bank of China Additions Standard Product Warranty Accrual, Increase for Warranties Issued Capitalized contract cost, amortization period Capitalized Contract Cost, Amortization Period Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Net income available to common stockholders, diluted Net Income (Loss) Available to Common Stockholders, Diluted All Executive Categories All Executive Categories [Member] Common stock Common Stock, Value, Issued Volatility minimum Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Minimum ACM Shanghai ACM Shanghai [Member] Entity owned or controlled by ACM Shanghai. Short-term investments (note 11) Short-Term Investments Share-Based Payment Arrangement, Employee Share-Based Payment Arrangement, Employee [Member] 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 Commitments and contingencies (note 16) Commitments and Contingencies China Everbright Bank China Everbright Bank [Member] China Everbright Bank Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Entity Small Business Entity Small Business Sales and marketing expense Selling and Marketing Expense [Member] Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Gross proceeds from sales of ACM Shanghai's shares Proceeds From (Payments For) Businesses and Interest in Affiliates, Financing Activities Proceeds From (Payments For) Businesses and Interest in Affiliates, Financing Activities China Hong Kong HONG KONG Non-controlling Interests Noncontrolling Interest [Member] LONG-TERM BORROWINGS Long-Term Debt [Text Block] Document Transition Report Document Transition Report Underlying Securities Award Underlying Securities Amount Short-Term Debt [Line Items] Short-Term Debt [Line Items] Concentration Risk [Line Items] Concentration Risk [Line Items] Equity Component [Domain] Equity Component [Domain] Document Period End Date Document Period End Date Long-Lived Assets by Geography Long-Lived Assets by Geographic Areas [Table Text Block] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount 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] Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] 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] Cash and Cash Equivalent [Abstract] Cash and Cash Equivalent [Abstract] 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] Revenue (note 3) Revenues Revenue from Contract with Customer, Excluding Assessed Tax All Individuals All Individuals [Member] Purchase of property and equipment Payments to Acquire Property, Plant, and Equipment Name Forgone Recovery, Individual Name Total current assets Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] 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 Other receivables Advances to related party Other Receivables, Net, Current Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount 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 Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Current liabilities: Liabilities, Current [Abstract] Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Geographical [Axis] Geographical [Axis] Total operating expenses Operating Expenses Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Risk free interest rate minimum Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum Quoted Prices in Active Markets for Identical Assets (Level 1) Fair Value, Inputs, Level 1 [Member] Statutory Accounting Practices [Table] Statutory Accounting Practices [Table] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Total contract liabilities Deferred Revenue, Current Schedule of Related Party Transactions, by Related Party [Table] Related Party Transaction [Table] Diluted (in dollars per share) Diluted (in dollars per share) Earnings Per Share, Diluted Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Geographic Areas, Long-Lived Assets [Abstract] Geographic Areas, Long-Lived Assets [Abstract] Accounts receivable, net (note 4) Total accounts receivable, net Accounts Receivable, after Allowance for Credit Loss, Current Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Title of 12(b) Security Title of 12(b) Security Non-cash investing activities: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Accrued commissions Accrued Sales Commission, Current Number of shares issued in transaction (in shares) Sale of Stock, Number of Shares Issued in Transaction Principal Payments of Long-Term Loan [Abstract] Long-Term Debt, Fiscal Year Maturity [Abstract] CITIC Bank CITIC Bank [Member] CITIC Bank Net income attributable to ACM Research, Inc. per share of common stock (note 2): Net income per share of common stock: Earnings Per Share [Abstract] Conversion of Class B common stock to Class A common stock Conversion of Stock, Shares Converted DESCRIPTION OF BUSINESS Business Description and Basis of Presentation [Text Block] Effective interest held as at Subsidiary, Ownership Percentage, Parent Investments, Debt and Equity Securities [Abstract] Investments, Debt and Equity Securities [Abstract] 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. Advances from customers Increase (decrease) in advances from customers Increase (Decrease) in Contract with Customer, Liability OTHER PAYABLES AND ACCRUED EXPENSES Accounts Payable and Accrued Liabilities Disclosure [Text Block] Cash and Cash Equivalents [Line Items] Cash and Cash Equivalents [Line Items] Cash paid for income taxes Income Taxes Paid, Net Award Timing Disclosures [Line Items] Time Deposits Time Deposits [Policy Text Block] Disclosure of accounting policy for time deposits. Inventories Schedule of Inventory, Current [Table Text Block] Accrued payroll Employee-related Liabilities, Current ACM Research (Cayman), Inc. ACM Research (Cayman), Inc. [Member] Entity owned or controlled by another entity. PROPERTY, PLANT AND EQUIPMENT, NET Property, Plant and Equipment Disclosure [Text Block] First-tools, Customer Ownership First-tools, Customer Ownership [Member] First-tools, Customer Ownership COMMON STOCK Equity [Text Block] Korea KOREA, REPUBLIC OF Net income attributable to ACM Research, Inc. Net Income (Loss) Attributable to Parent Expiration Date Trading Arrangement Expiration Date Construction in Progress Construction in Progress [Member] Others Other Accrued Liabilities, Current Accounts Receivable, Allowance for Credit Loss [Roll Forward] Accounts Receivable, Allowance for Credit Loss [Roll Forward] Reconciliation of cash, cash equivalents and restricted cash: Reconciliation of cash, cash equivalents and restricted cash in condensed consolidated statements of cash flows: [Abstract] Reconciliation of cash, cash equivalents and restricted cash in condensed consolidated statements of cash flows: [Abstract] Property, plant and equipment, net (note 6) Total property, plant and equipment, net Property, Plant and Equipment, Net Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Numerator: Net Income (Loss) Attributable to Parent [Abstract] Adoption Date Trading Arrangement Adoption Date Payable for investments Payments For Investments Payments For Investments Classes of common stock outstanding Number Of Classes Of Common Stock Outstanding Number Of Classes Of Common Stock Outstanding 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. Deferred revenue Deferred revenue Deferred Income, Current Entity Current Reporting Status Entity Current Reporting Status Long-Term Investment Long-Term Investment [Table Text Block] Tabular disclosure of long-term investment. Receivables [Abstract] Receivables [Abstract] Customer [Axis] Customer [Axis] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Income from operations Operating Income (Loss) Retained earnings Retained Earnings (Accumulated Deficit) Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] 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] Executive Category: Executive Category [Axis] Shengyi Shengyi Semiconductor Technology Co., Ltd [Member] Name of related party. Proceeds from long-term borrowings Proceeds from Issuance of Long-Term Debt Current Fiscal Year End Date Current Fiscal Year End Date Class of Stock [Axis] Class of Stock [Axis] Expected term Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term Advances to related parties Increase (Decrease) in Due to Related Parties 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] Accounts Receivable Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Payables and Accruals [Abstract] Payables and Accruals [Abstract] Other expense, net Other Nonoperating Income (Expense) Statement [Table] Statement [Table] 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] Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Revenue Benchmark Revenue Benchmark [Member] Dividends from unconsolidated affiliates Proceeds from Equity Method Investment, Distribution Unrecognized tax benefits Unrecognized Tax Benefits Weighted average shares of common stock outstanding used in computing per share amounts (note 2): Weighted Average Number of Shares Outstanding, Diluted [Abstract] All Adjustments to Compensation All Adjustments to Compensation [Member] Amendment Flag Amendment Flag Sale of stock, price per share (in USD per share) Sale of Stock, Price Per Share 2028 Long-Term Debt, Maturity, Year Two Termination Date Trading Arrangement Termination Date Net cash provided by financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Measure: Measure [Axis] Debt Securities, Available-for-Sale, Noncurrent Debt Securities, Available-for-Sale, Noncurrent Long-Lived Tangible Asset [Domain] Long-Lived Tangible Asset [Domain] Related parties accounts payable 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] Segment Reporting [Abstract] Segment Reporting [Abstract] Cost of revenue, including cost of revenue from related parties of $12,483 for the three months ended March 31, 2026 and $9,399 for the three months ended March 31, 2025, respectively Cost of revenue, related party Cost of Revenue Statutory surplus reserve (note 18) Statutory Accounting Practices, Statutory Capital and Surplus, Balance Statutory Accounting Practices, Statutory Capital and Surplus, Balance Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Interest or penalties Income Tax Examination, Penalties and Interest Expense Debt Disclosure [Abstract] Debt Disclosure [Abstract] Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Non-cash financing activities: Other Noncash Investing and Financing Items [Abstract] STATUTORY SURPLUS RESERVE [Abstract] STATUTORY SURPLUS RESERVE [Abstract] STATUTORY SURPLUS RESERVE [Abstract] Entity Tax Identification Number Entity Tax Identification Number Share-Based Payment Arrangement, Nonemployee Share-Based Payment Arrangement, Nonemployee [Member] Grantee Status [Axis] Grantee Status [Axis] Inventory, Net [Abstract] Inventory, Net [Abstract] Transportation equipment Transportation Equipment [Member] 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 Common stock issued (in shares) Common Stock, Shares, Issued 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] Bank of China Bank of China [Member] Name of the lender. 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. Foreign currency translation adjustment, net of tax of nil Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Insider Trading Arrangements [Line Items] Security Exchange Name Security Exchange Name Purchase of materials Related Party Transaction, Purchases from Related Party Proceeds from redemption and maturity of time deposits Increase (Decrease) of Long-term Time Deposits The cash outflow associated with increase of long-term time deposits maturity due after one year or beyond the normal operating cycle, if longer. Remainder of 2026 Long-Term Debt, Maturity, Remainder of Fiscal Year Raw materials Inventory, Raw Materials, Gross Time deposits, interest rate Time Deposits Interest Rate The interest rate on time deposits received during the reporting period. Total liabilities Liabilities Unrealized loss on short-term investments (note 11) Unrealized loss on short-term investments Marketable Security, Unrealized Gain (Loss) Wooil Flucon Co., ("Wooil") Wooil Flucon Company Limited [Member] Name of the companies components suppliers. Accounts Receivable [Abstract] Accounts Receivable, after Allowance for Credit Loss, Current [Abstract] Long-Term Debt, by Current and Noncurrent [Abstract] Long-Term Debt, by Current and Noncurrent [Abstract] Purchases of property, plant and equipment through other payable and accrued expenses Capital Expenditures Incurred but Not yet Paid Line of credit facility, maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] ACM-Wooil Microelectronics (Shanghai) Co., Ltd. ACM-Wooli Microelectronics (Shanghai) Co., Ltd [Member] ACM-Wooli Microelectronics (Shanghai) Co., Ltd Operating expenses: Operating Expenses [Abstract] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Total losses recognized at March 31 on short-term investments Debt Securities, Trading, Gain (Loss) Line of credit facility, interest rate during period Line of Credit Facility, Interest Rate During Period Statement [Line Items] Statement [Line Items] Hefei Shixi Chanheng Integrated Circuit Industry Venture Capital Fund Partnership (LP) ("Hefiei 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 Counterparty Name [Axis] Counterparty Name [Axis] Disaggregated Revenue Information [Abstract] Disaggregated Revenue Information [Abstract] Disaggregated Revenue Information [Abstract] Risk free interest rate maximum Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Maximum Common Stock Common Stock Common Stock [Member] 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] Net increase 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