Cover [Abstract] Amendment Flag Current Fiscal Year End Date Document Information [Line Items] Document Information [Table] Document Period End Date Entity Address, State or Province Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Filer Category Entity Public Float Entity Registrant Name Entity Central Index Key Entity Common Stock, Shares Outstanding Document Fiscal Year Focus Document Fiscal Period Focus Document Type Entity Interactive Data Current Entity Shell Company Entity Emerging Growth Company Entity Ex Transition Period Entity Small Business Award Type [Axis] SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract] ASU 2016-02 [Member] Accounting Standards Update 2016-02 [Member] Accounts payable-related party Accounts payable Accounts Payable and Other Accrued Liabilities Accounts payable OTHER PAYABLE AND ACCRUED EXPENSES Accounts Payable and Accrued Liabilities Disclosure [Text Block] Accounts Receivable [Abstract] Accounts Receivable, after Allowance for Credit Loss [Abstract] Accounts receivable, less allowance for doubtful accounts of $0 as of December 31, 2019 and $0 as of December 31, 2018 (note 3) Total Accounts Receivable Accounts Receivable [Abstract] Accounts Receivable, after Allowance for Credit Loss, Current [Abstract] Accounts receivable Accounts Receivable, before Allowance for Credit Loss, Current Accrued commissions Accrued professional fees Income taxes payable Accumulated Other Comprehensive Income (Loss) [Table] Less: Total accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated other comprehensive loss Accumulated Other Comprehensive Loss [Member] AOCI Attributable to Parent [Member] Additional paid in capital Additional Paid in Capital Additional Paid-In Capital [Member] Adjustments to reconcile net income from operations to net cash used in operating activities: Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Stock-based compensation APIC, Share-based Payment Arrangement, Increase for Cost Recognition Stock-based compensation expense Allowance for doubtful accounts Accounts receivable, allowance for doubtful accounts Less: allowance for doubtful accounts Amounts restricted included paid-in capital and statutory reserve funds Antidilutive Securities [Axis] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities, Name [Domain] Antidilutive securities excluded from computation of earnings per share (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Assets Assets Assets [Abstract] Total assets Assets Total current assets Assets, Current Current assets: Current assets: Current assets [Abstract] DESCRIPTION OF BUSINESS Business Description and Basis of Presentation [Text Block] Cash paid for amounts included in the measurement of lease liabilities [Abstract] Cash Flow, Operating Activities, Lessee [Abstract] Restricted Cash Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Cash, cash equivalents and restricted cash at beginning of period Cash, cash equivalents and restricted cash at end of period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash and cash equivalents Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Net increase in cash, cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Class of Stock [Line Items] Class of Stock [Line Items] Class of Stock [Domain] Class of Stock [Domain] Class of Stock [Domain] Class of Stock [Abstract] Commitments and contingencies (note 17) COMMITMENTS AND CONTINGENCIES [Abstract] COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] Class B Common Stock [Member] Common Stock Class B [Member] Common Class B [Member] Shares of common stock reserved for issuance (in shares) Common Stock [Member] Common Stock [Member] Common Stock [Member] Class A Common Stock [Member] Common Stock Class A [Member] Common Class A [Member] Common stock, par value (in dollars per share) Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Common stock, shares issued (in shares) Common stock, shares issued (in shares) Common Stock, Shares, Issued Common stock, shares authorized (in shares) Common stock, shares authorized (in shares) Common Stock, Shares Authorized Common stock, shares outstanding (in shares) Common stock, shares outstanding (in shares) Common stock Common Stock, Value, Issued Components of Deferred Tax Assets [Abstract] Components of Income Tax Benefit (Expense) [Abstract] Comprehensive Income Attributable to the Company Comprehensive Income, Policy [Policy Text Block] Comprehensive income: Comprehensive Income (Loss) Attributable to the Company [Abstract] Comprehensive income attributable to ACM Research, Inc. Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive Income (note 2) Comprehensive income attributable to the Company Software [Member] Concentration Risk Benchmark [Axis] Concentration of credit risk Concentration Risk Benchmark [Domain] Concentration Risk [Line Items] Concentration Risk [Table] PARENT COMPANY ONLY CONDENSED FINANCIAL INFORMATION Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Table] Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Table] 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] Construction in progress Advances from customers Contract with Customer, Liability, Current Commitments Investment - cost method Cost Method Investments Cost of revenue Cost of revenue Cost of Revenue Cost of Goods and Service [Policy Text Block] Cost of Revenue [Member] Total current tax expense Current Income Tax Expense (Benefit) U.S. state Foreign Current Foreign Tax Expense (Benefit) U.S. federal Current [Abstract] Current Income Tax Expense (Benefit), Continuing Operations [Abstract] Loans payable period SHORT-TERM BORROWINGS [Abstract] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument [Line Items] Debt Instrument [Line Items] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Promissory note principal amount Debt Instrument, Face Amount Interest rate on promissory note Debt Instrument, Interest Rate, Stated Percentage Line of credit due date Promissory note maturity date Debt Instrument, Maturity Date Borrowing Costs Debt, Policy [Policy Text Block] Deferred tax assets (note 15) Property and equipment (U.S.) Total deferred tax benefit Deferred Federal, State and Local, Tax Expense (Benefit) U.S. federal Deferred Federal Income Tax Expense (Benefit) Deferred income taxes Foreign Deferred Foreign Income Tax Expense (Benefit) Deferred [Abstract] One-time benefit of deferred tax asset Deferred Other Tax Expense (Benefit) Deferred revenue (offshore) Total gross deferred tax assets Deferred Tax Assets, Gross Deferred tax assets, net Deferred Tax Assets, Net U.S. state Deferred State and Local Income Tax Expense (Benefit) Deferred Tax Assets [Abstract] Net operating loss carry forwards (U.S.) and credit Total deferred tax assets Deferred Tax Assets, Net of Valuation Allowance Net operating loss carry forwards (offshore) Research credit carry-forwards Total deferred tax liabilities Accruals (U.S.) Stock-based compensation (U.S.) Reserves and other (offshore) Less: valuation allowance Deferred Tax Assets, Valuation Allowance Depreciation and amortization Depreciation expense STOCK-BASED COMPENSATION [Abstract] STOCK-BASED COMPENSATION Share-based Payment Arrangement [Text Block] U.S. Federal [Member] Domestic Tax Authority [Member] Due from intercompany Lease expenses and payable for leasehold improvement due to a related party (note 11) Net income attributable to ACM Research, Inc. per common share (note 2): Net income per common share [Abstract] Earnings Per Share, Basic and Diluted [Abstract] Diluted (in dollars per share) Diluted (in dollars per share) Earnings Per Share, Diluted Basic (in dollars per share) Basic (in dollars per share) Earnings Per Share, Basic Basic and Diluted Net Income per Common Share Earnings Per Share, Policy [Policy Text Block] Basic and Diluted Net Income (Loss) per Common Share [Abstract] Earnings Per Share [Abstract] Effect of exchange rate changes on cash, cash equivalents and restricted cash Effect of exchange rate changes on cash and cash equivalents Foreign rate differential Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent Change in valuation allowance Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent Income tax provision at statutory rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Other permanent difference Total income tax expense (benefit) Effective Income Tax Rate Reconciliation, Percent Effective Tax Rate Reconciliation [Abstract] Effective Income Tax Rate Reconciliation, Percent [Abstract] Unrecognized employee stock-based compensation expense Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Weighted-average period over which unrecognized compensation is expected to be recognized Accrued payroll Stock Options [Member] Employee Share Option [Member] Share-based Payment Arrangement, Option [Member] Manufacturing Equipment [Member] Equipment [Member] Purchase price Equity Component [Domain] Equity Component [Domain] COMMON STOCK [Abstract] Percentage of ordinary shares issued Investment - equity method Equity Method Investments Fair Value of Financial Instruments Fair Value of Financial Instruments, Policy [Policy Text Block] Intangible assets amortization period Intangible assets, net Finite-Lived Intangible Assets, Net Finite-Lived Intangible Assets, Major Class Name [Domain] Intangible Assets, Net [Abstract] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets by Major Class [Axis] China [Member] Foreign Tax Authority [Member] Exchange rate Foreign Currency Exchange Rate, Translation Furniture and Fixtures [Member] Loss on disposals of property, plant and equipment Gain (Loss) on Disposition of Property Plant Equipment General and administrative General and administrative expenses General and Administrative Expenses [Member] Gross profit Gross Profit Valuation of Long-Lived Assets Income Tax Authority [Axis] INCOME TAXES [Abstract] Income Statement Location [Axis] Income Statement Location [Domain] Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Equity income in net income of affiliates Equity income in net income of affiliates Equity in earnings of unconsolidated subsidiaries Consolidated Statements of Operations and Comprehensive Income [Abstract] Income Statement [Abstract] INCOME TAXES Income Tax Disclosure [Text Block] Income tax benefit (expense) (note 15) Total income tax benefit (expense) Income tax expense Income Tax Expense (Benefit) Income Taxes [Abstract] Income Tax Expense (Benefit), Continuing Operations [Abstract] Income Tax Authority [Domain] Income Taxes Income Tax, Policy [Policy Text Block] Cash paid for income taxes Other long-term liabilities Increase (Decrease) in Other Noncurrent Liabilities Advances from customers Other long-term assets Increase (Decrease) in Other Noncurrent Assets Accounts payable Increase (Decrease) in Accounts Payable Income tax payable Accounts receivable Increase (Decrease) in Accounts Receivable Other payables and accrued expenses Net changes in operating assets and liabilities: Other receivables Increase (Decrease) in Other Receivables Inventory Increase (Decrease) in Inventories Prepaid expenses Increase (Decrease) in Prepaid Expense Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Intangible Assets, Net Capitalized Interest Costs [Abstract] Capitalized borrowing costs Interest expense Interest expense, net Interest Expense Interest expense related to short-term borrowings Interest Expense, Short-term Borrowings Interest paid Finished goods INVENTORIES [Abstract] INVENTORIES Inventory Disclosure [Text Block] Inventory reserve Inventory Valuation Reserves Total inventory, gross Inventory, Gross Raw materials Inventory Inventory, Policy [Policy Text Block] Inventories (note 4) Total inventory, net Inventory Work in process Inventory [Abstract] Inventory, Net [Abstract] Interest income Interest income, net Investments Investment, Policy [Policy Text Block] Long-term investments (note 10) Total Investments Investments [Abstract] Investment in unconsolidated subsidiaries Investor [Member] LEASES Lessee, Operating Leases [Text Block] Lessee, Lease, Description [Line Items] 2020 2023 Lessee, Operating Lease, Liability, Payments, Due Year Four 2024 Lessee, Operating Lease, Liability, Payments, Due Year Five Total lease payments Lessee, Operating Lease, Liability, Payments, Due Maturities of Lease Liabilities for Operating Leases Lessee, Operating Lease, Liability, Maturity [Table Text Block] Weighted average remaining lease terms and discount rates [Abstract] Lessee, Lease, Description [Table] Less: Interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Leases Lessee, Leases [Policy Text Block] 2022 Lessee, Operating Lease, Liability, Payments, Due Year Three 2021 Lessee, Operating Lease, Liability, Payments, Due Year Two Term of lease agreement Lessee Disclosure [Abstract] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Components of lease expense [Abstract] Lease, Cost [Abstract] Lease cost Lease, Cost Components of Lease Expense Lease, Cost [Table Text Block] Leasehold Improvement [Member] LEASES [Abstract] Liabilities, Redeemable Non-controlling Interests and Stockholders' Equity Liabilities and Stockholders' Equity Liabilities and Stockholders' Equity [Abstract] Total liabilities Liabilities Total liabilities, redeemable non-controlling interests, and stockholders' equity Liabilities and Equity Current liabilities: Total current liabilities Liabilities, Current Maximum borrowing capacity Annual interest rate Interest-free loan to related party Loans and Leases Receivable, Related Parties ACCOUNTS RECEIVABLE Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Accounts receivable pledged as collateral for borrowings LONG-TERM INVESTMENT [Abstract] Increase in redeemable non-controlling interests due to issuance of common stock Noncontrolling Interest, Change in Redemption Value Less: Net income attributable to redeemable non-controlling interests Net income attributable to redeemable non-controlling interest Net income attributable to redeemable non-controlling interests Numerator [Abstract] Net Income (Loss) Attributable to Parent [Abstract] Net cash provided by operating activities Net cash used in operating activities Net cash used in investing activities Net cash provided by investing activities Cash flows from investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Net cash provided by financing activities Net cash provided by financing activities Net income attributable to ACM Research, Inc. Net income available to common stockholders, basic and diluted Net Income (Loss) Attributable to Parent Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] New Accounting Pronouncements or Change in Accounting Principle [Line Items] New Accounting Pronouncements or Change in Accounting Principle [Line Items] Recent Accounting Pronouncements Recent Accounting Pronouncements [Abstract] New Accounting Pronouncements and Changes in Accounting Principles [Abstract] New Accounting Pronouncements or Change in Accounting Principle [Table] New Accounting Pronouncements or Change in Accounting Principle [Table] Non-cash financing activities: Noncash Investing and Financing Items [Abstract] Non-operating income (expense), net Number of reporting segments Number of Reportable Segments Non-controlling Interest [Member] Office Equipment [Member] Maturities of lease liabilities [Abstract] Lessee, Operating Lease, Liability, Payment, Due [Abstract] Weighted average remaining lease term Operating lease right-of-use assets, net (note 8) Operating lease right-of-use assets Operating lease cost Lease expense under lease agreement Operating Lease, Expense Total operating expenses, net Operating Expenses Weighted average discount rate Income from operations Operating Income (Loss) Current portion of operating lease liability (note 8) Long-term operating lease liability (note 8) Operating cash outflow from operating leases Operating expenses: Operating expenses [Abstract] Operating loss carry-forwards, expiration date Present value of lease liabilities Lease liabilities Net operating loss carry-forwards DESCRIPTION OF BUSINESS [Abstract] Other Long-Term Liabilities Other Noncurrent Liabilities [Table Text Block] Foreign currency translation adjustment Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax OTHER LONG-TERM LIABILITIES [Abstract] Other receivables Other receivable Other payables and accrued expenses (note 7) Total Other long-term assets Other Long-term Liabilities [Abstract] Other Liabilities, Noncurrent [Abstract] OTHER LONG-TERM LIABILITIES Other income, net Other long-term liabilities (note 9) Other long-term liabilities Other payable Effect of foreign currency translation loss attributable to redeemable non-controlling interests Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax, Portion Attributable to Noncontrolling Interest Others Foreign currency translation adjustment Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent OTHER PAYABLE AND ACCRUED EXPENSES [Abstract] Payment for repurchase of Class A common stock Payments for Repurchase of Common Stock Monthly rental fee Purchase of intangible assets Payments to Acquire Intangible Assets Purchase of property and equipment Payments to Acquire Property, Plant, and Equipment Investments in unconsolidated affiliates Payments to Acquire Interest in Subsidiaries and Affiliates Plan Name [Axis] Plan Name [Domain] Prepaid expenses Proceeds from issuance of Class A common stock in connection with public offering, net of direct issuance expenses of $2,287 Net proceeds from issuance of stock Proceeds from Issuance of Common Stock Proceeds from sale of interest in subsidary Proceeds from issuance of common stock to redeemable Non-controlling interest Proceeds from Noncontrolling Interests Proceeds from stock option exercise to common stock Proceeds from short-term borrowings Product Warranty Liability [Line Items] Product Warranty Liability [Table] Accrued warranty Balance at end of period Balance at beginning of period Net income Net income Net income Useful lives Property, Plant and Equipment, Net [Abstract] Property, Plant and Equipment, Gross [Abstract] Total cost Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] PROPERTY, PLANT AND EQUIPMENT, NET Property, Plant and Equipment Disclosure [Text Block] Manufacturing equipment retired Property, Plant and Equipment Property, Plant and Equipment [Table Text Block] PROPERTY, PLANT AND EQUIPMENT, NET [Abstract] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Property, plant and equipment, net (note 5) Total property, plant and equipment, net Property, Plant and Equipment, Net Property, Plant and Equipment, Policy [Policy Text Block] Property, Plant and Equipment [Abstract] Accounts Receivable Receivable [Policy Text Block] ACCOUNTS RECEIVABLE [Abstract] Aggregate Changes in Balance of Gross Unrecognized Tax Benefits [Abstract] Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] Redeemable Noncontrolling Interest, by Legal Entity [Table] Redeemable Noncontrolling Interest [Line Items] Components of Change in Redeemable Non-controlling Interests Redeemable non-controlling interests (note 13) Balance Balance Redeemable Noncontrolling Interest [Abstract] RELATED PARTY BALANCES AND TRANSACTIONS [Abstract] Related Party Transaction [Line Items] Related Party Transaction [Line Items] Related Party Transaction [Abstract] Related Party Transaction, Due from (to) Related Party, Current [Abstract] Related Party [Axis] Related Party [Axis] Lease expenses and payable for leasehold improvement due to a related party RELATED PARTY BALANCES AND TRANSACTIONS Related Party Transactions Disclosure [Text Block] Related Party [Domain] Related Party [Domain] Purchased materials amount Related Party Transaction [Axis] Related Party Transaction [Domain] Repayments of notes Repayment of Notes Receivable from Related Parties Repayments of short-term borrowings Short-term borrowings repaid Research and Development Costs Research and Development Expense, Policy [Policy Text Block] Research and development Research and development expenses RESTRICTED NET ASSETS Restricted cash Accumulated Surplus (Deficit) [Member] Retained Earnings [Member] Accumulated surplus (deficit) Statutory Reserves [Abstract] Revenue Recognition Revenue from Contract with Customer [Policy Text Block] Revenue Revenue from Contract with Customer, Excluding Assessed Tax 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] Options unvested (in shares) Outstanding at end of period (in dollars per share) Outstanding at beginning of period (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Option, Nonvested, Weighted Average Exercise Price 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 Expected term in years Option price at the time of grant, fair market value of stock price percentage Outstanding weighed average remaining contractual term Share price (in RMB per share) Sale of Stock, Price Per Share Revenue [Member] Revenue Benchmark [Member] Warranty Obligations Schedule of Product Warranty Liability [Table Text Block] Aggregate Changes in Balance of Gross Unrecognized Tax Benefits Inventory Schedule of Inventory, Current [Table Text Block] Assumptions Used to Determine Fair Value of Share Options Granted Summary of Share Option Activities Share-based Payment Arrangement, Option, Activity [Table Text Block] Schedule of Finite-Lived Intangible Assets [Table] Other Payable and Accrued Expenses Schedule of Accounts Payable and Accrued Liabilities [Table Text Block] Components of Income Tax Benefit (Expense) Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Deferred tax Assets Basic and Diluted Net Income per Common Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Effective Income Tax Rate Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Securities Excluded from Computation of Earnings Per Share Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Short-Term Borrowings Schedule of Short-term Debt [Table Text Block] Schedule of Short-term Debt [Table] Schedule of Short-term Debt [Table] Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Accounts Receivable Concentration of Credit Risk Schedules of Concentration of Risk, by Risk Factor [Table Text Block] Security deposit amount SEGMENT INFORMATION SEGMENT INFORMATION [Abstract] Sales and Marketing Expenses [Member] Sales and marketing Sales and marketing expenses Sales and marketing expenses Selling and Marketing Expense Senior Secured Promissory Note [Member] Senior Notes [Member] Exercised (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Weighted Average Exercise Price [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Granted (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Expired (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price Stock-based compensation Share-based Payment Arrangement, Noncash Expense Fair value of common share (in dollars per share) Stock price (in dollars per share) Stock price (in dollars per share) Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [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 Stock-Based Compensation [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract] Expected dividend Volatility Fair Value of Option Granted [Abstract] Granted (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Vested and exercisable (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Expired (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period Risk-free interest rate Number of Option Share [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Forfeited/cancelled (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Weighed Average Remaining Contractual Term [Abstract] Options vested intrinsic value Award Type [Domain] Outstanding, beginning of period (in shares) Outstanding, end of period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Outstanding, end of period (in dollars per share) Outstanding, beginning of period (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Outstanding stock options intrinsic value Options vested (in shares) Stock-based Compensation Share-based Payment Arrangement [Policy Text Block] Shares issued (in shares) Shares, Issued Ending balance (in shares) Beginning balance (in shares) Shares, Outstanding Share price (in dollars per share) Shipping and Handling [Member] Shipping and Handling Costs Shipping and Handling Cost, Policy [Policy Text Block] Short-term lease cost Short-term Debt [Line Items] Short-term Debt [Line Items] SHORT-TERM BORROWINGS Short-term Debt [Text Block] Short-Term Borrowings [Abstract] Short-term Debt [Abstract] Short-term borrowings (note 6) Short-term borrowings SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Significant Accounting Policies [Text Block] Warranty Standard Product Warranty, Policy [Policy Text Block] Warranty [Abstract] U.S. State [Member] State and Local Jurisdiction [Member] Consolidated Balance Sheets [Abstract] Consolidated balance sheets [Abstract] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Axis] Consolidated statements of operations and comprehensive income [Abstract] Statement of Comprehensive Income [Abstract] Equity Components [Axis] Equity Components [Axis] Statement [Line Items] Statement [Table] Consolidated Statements of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Consolidated Statement of Changes in Stockholders' Equity [Abstract] Statutory surplus reserve Convertible shares in to Class A common stock (in shares) Cancellation of stock options Shares Issued, Value, Share-based Payment Arrangement, Forfeited Exercise of stock options (in shares) Exercised (in shares) Stock issued upon exercise of stock options (in shares) Cancellation of options to acquire shares (in shares) Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture Issuance of Class A common stock in connection with public offering (in shares) Number of shares issued (in shares) Shares issued (in shares) Exercise of stock options Stock Issued During Period, Value, Stock Options Exercised Issuance of Class A common stock in connection with public offering Shares issued value Stock Issued During Period, Value, New Issues Cancellation of options to acquire stock, amount Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture Number of shares repurchased (in shares) Share repurchase (in shares) Number of shares repurchased/surrender in exchange (in shares) Stock Repurchased During Period, Shares Share repurchase Stock Repurchased During Period, Value COMMON STOCK Stockholders' Equity Note Disclosure [Text Block] Total stockholders' equity Total stockholders' equity Ending balance Stockholders' Equity Attributable to Parent Reverse stock split Beginning balance Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Stockholders' equity: Stockholders' equity: SUBSEQUENT EVENTS SUBSEQUENT EVENTS [Abstract] Supplemental disclosure of cash flow information: Tax credit carry-forwards, expiration date Transportation Equipment [Member] Type of Adoption [Domain] Type of Adoption [Domain] Beginning balance Ending balance Unrecognized Tax Benefits Reductions to unrecognized tax benefits related to lapsing statute of limitations Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations Accrued penalties Use of Estimates Use of Estimates, Policy [Policy Text Block] Increase (decrease) in valuation allowance Warrant [Member] Effect of dilutive securities (in shares) Weighted Average Number Diluted Shares Outstanding Adjustment Basic (in shares) Weighted average shares outstanding, basic (in shares) Weighted Average Number of Shares Outstanding, Basic Diluted (in shares) Weighted average shares outstanding, diluted (in shares) Weighted average common shares outstanding used in computing per share amounts (note 2): PARENT COMPANY ONLY CONDENSED FINANCIAL INFORMATION [Abstract] Condensed Income Statements, Captions [Line Items] Condensed Cash Flow Statements, Captions [Line Items] Condensed Income Statement [Table] Condensed Balance Sheet Statement [Table] Condensed Cash Flow Statement [Table] Condensed Balance Sheet Statements, Captions [Line Items] Consolidated Entities [Domain] Consolidated Entities [Domain] Consolidated Entities [Domain] Consolidated Entities [Axis] Consolidated Entities [Axis] Consolidated Entities [Axis] Currency [Axis] Director [Member] Customer [Axis] Customer [Axis] Maximum [Member] Minimum [Member] Customer [Domain] Product and Service [Domain] Parent Company [Member] Product and Service [Axis] Statistical Measurement [Domain] Statistical Measurement [Domain] Statistical Measurement [Axis] Statistical Measurement [Axis] Condensed Statement of Operations Condensed Balance Sheet Condensed Statement of Cash Flows Geographical [Domain] Geographical [Axis] Subsidiaries [Member] Subsidiaries [Member] Subsidiaries [Member] Title of Individual [Domain] Title of Individual [Axis] PRC [Member] CHINA United States [Member] UNITED STATES RMB [Member] China, Yuan Renminbi KRW [Member] Korea (South), Won All Currencies [Domain] Change in Redeemable Noncontrolling Interests [Abstract] Change in Redeemable Noncontrolling Interests [Abstract] The percentage of redeemable non-controlling interests issued. Percentage of Redeemable Non-controlling Interests Issued Percentage of redeemable non-controlling interest issued The number of investors owned by employees entities of the company. Number of Investors Owned by Employees Entities Number of investors owned by employees entities Term of supplement agreement with investors, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Term of Supplemental Agreement Term of supplemental agreement The entire disclosure for a redeemable non-controlling interests. Redeemable Non-Controlling Interests [Text Block] REDEEMABLE NON-CONTROLLING INTERESTS REDEEMABLE NON-CONTROLLING INTERESTS [Abstract] Cash delivered by related party as of the close of business. Cash Delivered as of Close of Business Cash delivered as of the close of business Loans extended period in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Includes, but not limited to, weeks in a year or quarter. Loan Extended Period Loans extended period Amount received from related party for leasehold improvements. Amount Funded for Leasehold Improvements Amount funded for leasehold improvements Advance payment for material purchase. Prepaid for material purchases Prepaid for material purchases Investment repayment period after exercise of warrant, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Investment Repayment Period Investment repayment period Name of related party. Ninebell Co., Ltd [Member] Ninebell Co., Ltd [Member] Number of votes entitled for each share of common stock. Voting Rights per Share Number of votes for each share entitled Name of related party. Shengxin (Shanghai) Management Consulting Limited Partnership [Member] SMC [Member] SMC [Member] The amount of underwriting discount and offering expenses on issuance of stock. Underwriting Discount and Offering Expenses Underwriting discount and offering expenses Name of the stock-based compensation arrangement option. Nonstatutory Stock Options [Member] Nonstatutory Stock Options [Member] Name of the stock-based compensation arrangement option. Incentive Stock options [Member] The discount percentage of purchase price paid by employee entities. Noncontrolling Interest, Percentage of Discount on Purchase Price for Employee Entities Percentage of discount on purchase price for employee entities The number of shares outstanding during immediate preceding year percentage Percentage of Shares Outstanding Immediate Preceding Year Shares outstanding immediate preceding year, percentage Weighted average grant-date fair value of non-vested options expired. Share-based Compensation Arrangement by Share-based Payment Award Options Expired in Period Weighted Average Grant Date Fair Value Expired (in dollars per share) Name of the stock-based compensation arrangement option plan. 1998 Stock Option Plan [Member] Weighted average grant-date fair value of non-vested options exercised. Share-based Compensation Arrangement by Share-based Payment Award Options Exercised in Period Weighted Average Grant Date Fair Value Exercised (in dollars per share) Name of the stock-based compensation arrangement option. 2016 Omnibus Incentive Plan [Member] Amount by which current fair value of underlying stock exceeds exercise price of unvested options outstanding. Share Based Compensation Arrangement By Share Based Payment Award Options Non Vested Outstanding Aggregate Intrinsic Value Options unvested intrinsic value Primary financial statement caption encompassing research and development expenses. Research and Development Expenses [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. Share-based Payment Arrangement, Non Employee Stock Option [Member] Non-Employee Share Option [Member] Amount of increase (decrease) in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. Increase/(Decrease) of unrecognized tax benefits taken in prior years Increase/ (decrease) of unrecognized tax benefits taken in prior years Operating loss carryforwards are subject to annual limitation as a result of the ownership change. Operating Loss Carryforwards Subject to Annual Limitation Ownership Change Net operating loss carryforwards subject to annual limitation ownership change Effective period for entities certified as "advanced and new technology enterprises" to receive preferential income tax rate. Effective period of preferential income tax rate Effective period of preferential income tax rate Information about deferred tax assets liabilities translation difference. Translation difference Amount of increase (decrease) in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return. Unrecognized Tax Benefits, Increase (Decrease) Resulting from Current Period Tax Positions Increase/ (decrease) of unrecognized tax benefits related to current year Amount of increase (decrease) in unrecognized tax benefits resulting from settlements with taxing authorities. Unrecognized Tax Benefits, Increase (Decrease) Resulting from Settlements with Taxing Authorities Increase/ (decrease) of unrecognized tax benefits related to settlements 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. Income Taxes [Line Items] Income Taxes [Line Items] Disclosure of information about income taxes. Income Taxes [Table] Income Taxes [Table] Percentage of foreign tax rate. Foreign corporate tax rate The amount of increase in the product warranty accrual. Product Warranty Accrual Additions Additions The amount of utilized product warranty accrual. Product Warranty Accrual Utilized Utilized A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. Warranty Obligations [Roll Forward] Warranty Obligations [Roll Forward] 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. Standard Product Warranty Period Standard product warranty period Tabular disclosure of the estimated useful lives of assets. Schedule Of Estimated Useful Lives For Property And Equipment [Table Text Block] Estimated Useful Lives of Property, Plant and Equipment Tabular disclosure of translations of foreign exchange rate. Schedules of Translations of Foreign Exchange Rate [Table Text Block] Translations of Foreign Exchange Rate RESTRICTED NET ASSETS [Abstract] Intangible assets amortization period, if neither the contract nor local law specifies a beneficial period, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Intangible Assets Amortization Period, Condition Intangible assets amortization period, if neither the contract nor local law specifies a beneficial period The maximum period in which finished goods typically are shipped from the warehouse in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days Maximum Shipment Period of Finished Goods from Warehouse Maximum shipment period of finished goods from warehouse Foreign exchange rate used to translate amounts denominated in functional currency to reporting currency. Foreign Currency Exchange Rate, Translation2 Exchange rate Translations of Foreign Exchange Rate [Abstract] Translations of Foreign Exchange Rate [Abstract] 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. Translations of Foreign Exchange Rates [Line Items] Name of the significant customer. Customer B [Member] Customer B [Member] Number of major customers who contributes 10% or more of entity's total revenue. Number of Major Customers Number of major customers Concentration of Credit Risk [Abstract] Concentration of Credit Risk [Abstract] Name of the significant customer. Customer C [Member] Customer C [Member] Name of the significant customer. Customer A [Member] Customer A [Member] A table or schedule providing information pertaining to translations of foreign exchange rate. Schedule of Translations of Foreign Exchange Rate [Table] Foreign Currency Risk and Translation [Abstract] Foreign Currency Risk and Translation [Abstract] Shipping and Handling Costs [Abstract] Shipping and Handling Costs [Abstract] Disclosure of accounting policy for statutory reserves. Statutory Reserves [Policy Text Block] Statutory Reserves Disclosure of accounting policy for redeemable non-controlling Interests. Redeemable Non-controlling Interests [Policy Text Block] Redeemable Non-controlling Interests Disclosure of accounting policy for redeemable convertible preferred stock. Redeemable Convertible Preferred Stock [Policy Text Block] Redeemable Convertible Preferred Stock Disclosure of accounting policy for government subsidies. Government Subsidies [Policy Text Block] Government Subsidies Disclosure of accounting policy for basis of presentation and principles of consolidation, used to prepare the financial statements. Basis of Presentation and Principles of Consolidation [Policy Text Block] Basis of Presentation and Principles of Consolidation Disclosure of accounting policy for operating and financial risks. Operating and Financial Risks [Policy Text Block] Operating and Financial Risks 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. Electronic Equipment [Member] Electronic Equipment [Member] Equipment used for the primary purpose of manufacturing the product. Manufacturing Equipment [Member] The long lived, depreciable assets and tangible personal property used in an office setting. Computer and Office Equipment [Member] Computer and Office Equipment [Member] Anti-dilutive Securities [Abstract] Antidilutive Securities Excluded from Computation of Earnings Per Share [Abstract] Amount of government subsides recognized as reductions of relevant expenses. Government Subsidies Recognized as Reductions of Relevant Expenses Subsidies recognized as reductions of relevant expenses The number of subsidies awarded from local and central governmental authorities. Number of Subsidies Awarded Number of subsidies awarded Amount of government subsides recognized as other income during the period. Government Subsidies Recognized as Other Income Subsidies recognized as other income Government Subsidies [Abstract] Government Subsidies [Abstract] Tabular disclosure of the entity's subsidiaries and information of their direct or indirect interests with date, state of incorporation information. Direct or Indirect Interests in Subsidiaries [Table Text Block] Direct or Indirect Interests of Subsidiaries Represents first portion of investors. First Tranche Investors [Member] Tranche 1 [Member] Percentage of equity interests acquired at the acquisition date in the business combination. Business Acquisition, Percentage of Equity Interests Acquired Purchase of equity interest percentage Name of entity owned or controlled by another entity. Name of Subsidiary Name of subsidiaries Entity owned or controlled by another entity. Shengwei Research (Shanghai), Inc. [Member] Shengwei Research (Shanghai), Inc. [Member] Represents Second portion of investors. Second Tranche Investors [Member] Tranche 2 [Member] Entity owned or controlled by another entity. ACM Research Korea CO., LTD [Member] Information of place and date of incorporation of an entity. Name of Date of Incorporation Date and place of Incorporation Entity owned or controlled by another entity. ACM Research (Wuxi), Inc. [Member] Entity owned or controlled by another entity. CleanChip Technologies Limited [Member] CleanChip Technologies Limited [Member] Entity owned or controlled by another entity. ACM Research (CA), Inc. [Member] The amount of registered capital. Registered Capital Registered capital The percentage of ownership of common stock or equity participation of subsidiaries. Subsidiaries Ownership Percentage Effective interest held as at The amount of capital injected in the subsidiary. Capital Injected in Subsidiary Capital injected in subsidiary The percentage of outstanding shares to be sold to investors as per the agreements. Percentage of Outstanding Shares to be Sold to Investors Percentage of outstanding shares to be sold to investors Percentage of outstanding shares issued Amount of purchase price of stock agreed by investors as per the agreements. Purchase Price of Stock Agreed by Investors Purchase price of stock agreed by investors Term to complete listing of shares of ACM Shanghai on the Shanghai Stock Exchange's new Sci-Tech innovation board known as Star Market. Term to complete listing of shares Term to complete listing of shares Business Description [Abstract] Description of Business [Abstract] Tabular disclosure of lessee's operating lease supplemental cash flow information. Lessee Operating Lease Supplemental Cash Flow Information Related to Operating Leas [Table Text Block] Supplemental Cash Flow Information Related to Operating Leases Tabular disclosure of 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] Weighted Average Remaining Lease Terms and Discount Rates for Operating Leases Carrying value as of the balance sheet date of obligations incurred through that date and payable for machine testing fees. Accrued Machine Testing Fees, Current Accrued machine testing fees Subsidies to stress free polishing project, commenced in 2008 and 2017. Subsidies to Stress Free Polishing project [Member] Subsidies to Stress Free Polishing Project, Commenced in 2008 and 2017 [Member] Subsidies to polytetrafluoroethylene, commenced in 2018. Subsidies to Polytetrafluoroethylene [Member] Subsidies to Polytetrafluoroethylene Project, Commenced in 2018 [Member] Other items related to other long-term liabilities. Other [Member] Other [Member] Subsidies to electro copper plating project, commenced in 2014. Subsidies to Electro Copper Plating project [Member] Subsidies to Electro Copper Plating Project, Commenced in 2014 [Member] A contractual arrangement with a lender under which borrowings can be made up to a specific amount at any point in time, and under which borrowings outstanding may be either short-term or long-term, depending upon the particulars. Line of Credit 5 [Member] Line of Credit Due on June 13, 2019 [Member] A contractual arrangement with a lender under which borrowings can be made up to a specific amount at any point in time, and under which borrowings outstanding may be either short-term or long-term, depending upon the particulars. Line of Credit 9 [Member] Line of Credit Due on January 22, 2020 [Member] A contractual arrangement with a lender under which borrowings can be made up to a specific amount at any point in time, and under which borrowings outstanding may be either short-term or long-term, depending upon the particulars. Line of Credit 4 [Member] Line of Credit Due on June 6, 2019 [Member] A contractual arrangement with a lender under which borrowings can be made up to a specific amount at any point in time, and under which borrowings outstanding may be either short-term or long-term, depending upon the particulars. Line of Credit 6 [Member] Line of Credit Due on January 23, 2019 [Member] A contractual arrangement with a lender under which borrowings can be made up to a specific amount at any point in time, and under which borrowings outstanding may be either short-term or long-term, depending upon the particulars. Line of Credit 3 [Member] Line of Credit Due on January 23, 2020 [Member] A contractual arrangement with a lender under which borrowings can be made up to a specific amount at any point in time, and under which borrowings outstanding may be either short-term or long-term, depending upon the particulars. Line of Credit 11 [Member] Line of Credit Due on March 25, 2020 [Member] A contractual arrangement with a lender under which borrowings can be made up to a specific amount at any point in time, and under which borrowings outstanding may be either short-term or long-term, depending upon the particulars. Line of Credit 10 [Member] Line of Credit Due on February 14, 2020 [Member] A contractual arrangement with a lender under which borrowings can be made up to a specific amount at any point in time, and under which borrowings outstanding may be either short-term or long-term, depending upon the particulars. Line of Credit 8 [Member] Line of Credit Due on January 18, 2020 [Member] A contractual arrangement with a lender under which borrowings can be made up to a specific amount at any point in time, and under which borrowings outstanding may be either short-term or long-term, depending upon the particulars. Line of Credit 12 [Member] Line of Credit Due on April 17, 2020 [Member] A contractual arrangement with a lender under which borrowings can be made up to a specific amount at any point in time, and under which borrowings outstanding may be either short-term or long-term, depending upon the particulars. Line of Credit 1 [Member] Line of Credit Due on April 17, 2019 [Member] A contractual arrangement with a lender under which borrowings can be made up to a specific amount at any point in time, and under which borrowings outstanding may be either short-term or long-term, depending upon the particulars. Line of Credit 2 [Member] Line of Credit Due on February 14, 2019 [Member] A contractual arrangement with a lender under which borrowings can be made up to a specific amount at any point in time, and under which borrowings outstanding may be either short-term or long-term, depending upon the particulars. Line of Credit 7 [Member] Line of Credit Due on February 21, 2020 [Member] Base rent for use of lessor's assets under operating leases for certain time period. Increased Base Rent, Period 1 Increased base rent for April 1, 2019 to March 31, 2020 Base rent for use of lessor's assets under operating leases for certain time period. Increased Base Rent, Period 2 Increased base rent for April 1, 2020 to March 31, 2021 This element represents area of office space and warehouse. Area of Space for Office and Warehouse Area of space for office and warehouse Name of related party. Shanghai Zhangjiang Group Co., Ltd. [Member] Shanghai Zhangjiang Group Co., Ltd. [Member] Entity owned or controlled by another entity. ACM Research (Shanghai), Inc. [Member] ACM Shanghai [Member] ACM Research (Shanghai), Inc. [Member] Entity owned or controlled by another entity. ACM Wuxi [Member] ACM Wuxi [Member] Supplemental Cash Flow Information Related to Operating Leases [Abstract] Supplemental cash flow information related to operating leases [Abstract] This element represents the cash inflow from the net of direct expenses to the entity. Proceeds from Issuance of Net of Direct Expenses Direct issuance expenses Conversion of warrants to common stock. Warrant conversion to common stock Warrant conversion to common stock 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: The cash outflow to cancel common stock during the period. Payment for Cancellation of Stock Options Payment for cancellation of stock option Information about inventory pledged as collateral for borrowings. Inventory Pledged as Collateral for Borrowings Inventory pledged as collateral for borrowings Number of share warrants (or share units) exercised during the current period. Stock Issued During Period, Shares, Common Stock Warrant Exercised Exercise of stock warrant issued to SMC/HFG (in shares) Exercise of common stock warrant issued (in shares) Number of shares issued during the period as a result of the conversion of Class B stock to Class A stock. Stock Issued During Period, Shares, Conversion of Class B Stock to Class A Stock Conversion of Class B common stock to Class A common stock (in shares) Conversion of class B common shares to Class A common shares (in shares) The net amount of stock issued during the period upon the conversion of Class B stock to Class A stock. Stock Issued During Period, Value, Conversion of Class B Stock to Class A Stock Conversion of Class B common stock to Class A common stock Value of stock issued as a result of the exercise of stock warrants. Stock Issued During Period, Value, Common Stock Warrant Exercised Exercise of stock warrant issued to SMC/HFG Tabular disclosure of long-term investment. Long-Term Investment [Table Text Block] Long-Term Investment The amount of investment in partnership. Investment in Partnership Investment in partnership The number of investors with agreements entered pursuant to qualifying for the Listing and IPO. Number of Investors with Agreements Entered Number of investors with agreements entered Classification of Investments [Abstract] Classification of Investments [Abstract] Name of the companies principal material supplier. Ninebell Company Limited [Member] Ninebell [Member] Name of the companies components suppliers. Shengyi Semiconductor Technology Company Limited [Member] Shengyi [Member] The percentage ownership in Partnership's total subscribed capital. Ownership Percentage in Partnership Ownership percentage in partnership 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. Long-Term Investment [Line Items] Long-Term Investment [Line Items] A container table for all schedule of long-term investment. Long-Term Investment [Table] Long-Term Investment [Table] Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income (loss) and other comprehensive income (loss), attributable to redeemable noncontrolling interests. Excludes changes in equity resulting from investments by owners and distributions to owners. Comprehensive Income (Loss) Attributable to Redeemable Non-controlling Interests Less: Comprehensive income attributable to redeemable non-controlling interests The entire disclosure for long-term investment. long-term investment [Text Block] LONG-TERM INVESTMENT