Cover [Abstract]
Amendment Flag
Current Fiscal Year End Date
Document Period End Date
Entity Listings [Table]
Entity Address, State or Province
Entity Listings [Line Items]
Entity Current Reporting Status
Entity Filer Category
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 Small Business
Award Type [Axis]
SIGNIFICANT ACCOUNTING POLICIES [Abstract]
Accounts payable
Accounts Payable, Related Parties, Current
Accounts payable
OTHER PAYABLE AND ACCRUED EXPENSES
Accounts Payable and Accrued Liabilities Disclosure [Text Block]
Accounts Receivable [Member]
Accounts receivable, less allowance for doubtful accounts of $0 as of March 31, 2020 and $0 as of December 31, 2019 (note 3)
Total
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
Less: Total accumulated depreciation
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment
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:
Stock-based compensation
APIC, Share-based Payment Arrangement, Increase for Cost Recognition
Stock-based compensation expense
Stock-based compensation expense
Accounts receivable, allowance for doubtful accounts
Less: allowance for doubtful accounts
Assets
Assets
Assets [Abstract]
Total assets
Assets
Total current assets
Assets, Current
Current assets:
Current assets:
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]
Cash, cash equivalents and restricted cash at end of period
Cash, cash equivalents and restricted cash at beginning of period
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents
Cash and cash equivalents
Net increase (decrease) 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 [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]
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 Income Tax Expense [Abstract]
Comprehensive income:
Comprehensive income attributable to ACM Research, Inc.
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Comprehensive Income
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest
Concentration Risk Benchmark [Axis]
Concentration of credit risk
Concentration Risk Benchmark [Domain]
Concentration Risk [Line Items]
Concentration of Credit Risk
Concentration Risk, Credit Risk, Policy [Policy Text Block]
Concentration Risk [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 [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
Cost of revenue
Cost of Revenue [Member]
Cost of Sales [Member]
Total current tax expense
Current Income Tax Expense (Benefit)
U.S. state
Current State and Local Tax Expense (Benefit)
Foreign
Current Foreign Tax Expense (Benefit)
U.S. federal
Current Federal Tax Expense (Benefit)
Current [Abstract]
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]
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
Deferred tax assets (note 15)
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]
U.S. state
Deferred State and Local Income Tax Expense (Benefit)
Depreciation and amortization
Depreciation expense
STOCK-BASED COMPENSATION [Abstract]
STOCK-BASED COMPENSATION
Share-based Payment Arrangement [Text Block]
Lease expenses and payable for leasehold improvement due to a related party (note 11)
Accrued due to a related party (note 11)
Due to Related Parties
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 per Common Share [Abstract]
Earnings Per Share [Abstract]
Effect of exchange rate changes on cash, cash equivalents and restricted cash
Foreign corporate tax rate
Statutory U.S federal income tax rate
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
Employee Share Option [Member]
Employee Stock Purchase Plan [Member]
Share-based Payment Arrangement, Option [Member]
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Manufacturing Equipment [Member]
Equipment [Member]
Purchase price
Equity Component [Domain]
Equity Component [Domain]
COMMON STOCK [Abstract]
Percentage of ordinary shares issued
Investment - equity method
Intangible assets, net
Finite-Lived Intangible Assets, Net
China [Member]
Foreign Tax Authority [Member]
General and administrative
General and Administrative Expense [Member]
Gross profit
Gross Profit
Income Tax Authority [Axis]
INCOME TAXES [Abstract]
Income Statement Location [Axis]
Income Statement Location [Domain]
Equity income in net income of affiliates
Equity income in net income of affiliates
Income (Loss) from Equity Method Investments
Condensed Consolidated Statements of Operations and Comprehensive Income (Unaudited) [Abstract]
INCOME TAXES
Income Tax Disclosure [Text Block]
Income tax expense (note 15)
Income tax (benefit) expense
Total income tax expense
Income Tax Expense (Benefit)
Income Taxes [Abstract]
Income Tax Expense (Benefit), Continuing Operations [Abstract]
Interest or penalties
Income Tax Examination, Penalties and Interest Expense
Income Tax Authority [Domain]
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]
Interest expense
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]
Total inventory
Inventory, Gross
Raw materials
Inventories (note 4)
Work in process
Inventory [Abstract]
Interest income
Long-term investments (note 10)
Total
Investments [Abstract]
Investor [Member]
LEASES
Lessee, Operating Leases [Text Block]
2021
Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months
2024
Lessee, Operating Lease, Liability, Payments, Due Year Four
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]
2020
Less: interest
Lessee, Operating Lease, Liability, Undiscounted Excess Amount
2023
Lessee, Operating Lease, Liability, Payments, Due Year Three
2022
Lessee, Operating Lease, Liability, Payments, Due Year Two
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 and Stockholders' Equity
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
ACCOUNTS RECEIVABLE
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]
Accounts receivable pledged as collateral for borrowings
LONG-TERM INVESTMENT [Abstract]
Net income attributable to redeemable non-controlling interests
Less: Net income attributable to redeemable non-controlling interests
Net income attributable to redeemable non-controlling interest
Numerator [Abstract]
Net Income (Loss) Attributable to Parent [Abstract]
Net cash provided by (used in) operating activities
Net Cash Provided by (Used in) Operating Activities
Net cash used in investing activities
Net Cash Provided by (Used in) 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 (used in) financing activities
Net Cash Provided by (Used in) 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]
Recent Accounting Pronouncements
Non-cash financing activities:
Noncash Investing and Financing Items [Abstract]
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 cost
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:
Present value of lease liabilities
DESCRIPTION OF BUSINESS [Abstract]
Other Long-Term Liabilities
Other Noncurrent Liabilities [Table Text Block]
Foreign currency translation adjustment
OTHER LONG-TERM LIABILITIES [Abstract]
Other receivables
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 (expense), net
Other long-term liabilities
Other long-term liabilities (note 9)
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]
Purchase of intangible assets
Payments to Acquire Intangible Assets
Purchase of property and equipment
Payments to Acquire Property, Plant, and Equipment
Prepaid expenses
Proceeds from sale of interest in subsidiary
Proceeds from stock option exercise to common stock
Proceeds from short-term borrowings
Accrued warranty
Net income
Net income
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]
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 [Abstract]
ACCOUNTS RECEIVABLE [Abstract]
Components of Change in Redeemable Non-controlling Interests
Balance
Balance
Redeemable non-controlling interests (note 13)
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]
RELATED PARTY BALANCES AND TRANSACTIONS
Related Party Transactions Disclosure [Text Block]
Related Party [Domain]
Related Party [Domain]
Purchase of materials
Related Party Transaction, Purchases from Related Party
Related Party Transaction [Axis]
Related Party Transaction [Domain]
Repayments of notes
Repayment of Notes Receivable from Related Parties
Repayments of short-term borrowings
Repayments of Short-term Debt
Research and development
Research and Development Expense [Member]
Restricted cash
Restricted cash
Accumulated Deficit [Member]
Accumulated surplus
Retained Earnings (Accumulated Deficit)
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]
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
Outstanding weighed average remaining contractual term
Revenue Benchmark [Member]
Inventory
Schedule of Inventory, Current [Table Text Block]
Related Party Balances and Transactions
Schedule of Related Party Transactions [Table Text Block]
Summary of Share Option Activities
Share-based Payment Arrangement, Option, Activity [Table Text Block]
Other Payable and Accrued Expenses
Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]
Components of Income Tax Expense
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
Basic and Diluted Net Income per Common Share
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Components of Stock-based Compensation Expense
Share-based Payment Arrangement, Cost by Plan [Table Text Block]
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table]
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
Sales and Marketing Expense [Member]
Selling and Marketing Expense [Member]
Sales and marketing
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 Expense [Abstract]
Share-based Payment Arrangement, Noncash Expense [Abstract]
Stock-based compensation
Share-based Payment Arrangement, Noncash Expense
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]
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
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]
Award Type [Domain]
Outstanding, end of period (in shares)
Outstanding, beginning of period (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number
Outstanding, beginning of period (in dollars per share)
Outstanding, end of period (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price
Shares issued (in shares)
Shares, Issued
Beginning balance (in shares)
Ending balance (in shares)
Shares, Outstanding
Share price (in dollars per share)
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
SIGNIFICANT ACCOUNTING POLICIES
Significant Accounting Policies [Text Block]
Condensed Consolidated Balance Sheets (Unaudited) [Abstract]
Class of Stock [Axis]
Class of Stock [Axis]
Equity Components [Axis]
Equity Components [Axis]
Statement [Line Items]
Statement [Table]
Condensed Consolidated Statements of Cash Flows (Unaudited) [Abstract]
Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) [Abstract]
Convertible shares in to Class A common stock (in shares)
Exercise of stock options (in shares)
Stock issued upon exercise of stock options (in shares)
Exercised (in shares)
Cancellation of options to acquire shares (in shares)
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture
Shares issued (in shares)
Exercise of stock options
Stock Issued During Period, Value, Stock Options Exercised
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/surrender in exchange (in shares)
COMMON STOCK
Stockholders' Equity Note Disclosure [Text Block]
Total stockholders' equity
Beginning balance
Ending balance
Stockholders' Equity Attributable to Parent
Stockholders' equity:
Stockholders' equity:
Supplemental disclosure of cash flow information:
Transportation Equipment [Member]
Unrecognized tax benefits
Use of Estimates
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):
Consolidated Entities [Domain]
Consolidated Entities [Domain]
Consolidated Entities [Domain]
Consolidated Entities [Axis]
Consolidated Entities [Axis]
Consolidated Entities [Axis]
Maximum [Member]
Minimum [Member]
Statistical Measurement [Domain]
Statistical Measurement [Domain]
Statistical Measurement [Axis]
Statistical Measurement [Axis]
Subsidiaries [Member]
Subsidiaries [Member]
Subsidiaries [Member]
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)
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)
The number of subsidiaries liable for PRC corporate income taxes rate.
Number of Subsidiaries
Number of subsidiaries
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
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]
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 Stock Option [Member]
Non-Employee Stock Purchase Plan [Member]
Amount for prepaid expense to related parties.
Related Party Transaction, Prepaid Expense from Related Party
Prepaid expenses
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
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
Name of related party.
Shengyi Semiconductor Technology Co., Ltd [Member]
Shengyi Semiconductor Technology Co., Ltd [Member]
Name of related party.
Ninebell Co., Ltd [Member]
Ninebell Co., Ltd [Member]
Name of related party.
Shengxin (Shanghai) Management Consulting Limited Partnership [Member]
SMC [Member]
Number of votes entitled for each share of common stock.
Voting Rights per Share
Number of votes for each share entitled
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
Change in Redeemable Noncontrolling Interests [Abstract]
Change in Redeemable Non-controlling Interests [Abstract]
The entire disclosure for a redeemable non-controlling interests.
Redeemable Non-Controlling Interests [Text Block]
REDEEMABLE NON-CONTROLLING INTERESTS
REDEEMABLE NON-CONTROLLING INTERESTS [Abstract]
Number of share warrants (or share units) exercised during the current period.
Stock Issued During Period, Shares, Common Stock Warrant Exercised
Exercise of common stock warrant issued (in shares)
Exercise of stock warrant (in shares)
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
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 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 4 [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 5 [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 August 24, 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 2 [Member]
Line of Credit Due on February 21, 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 6 [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 9 [Member]
Line of Credit Due on July 11, 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 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 7 [Member]
Line of Credit Due on April 17, 2020 [Member]
Tabular disclosure of long-term investment.
Long-Term Investment [Table Text Block]
Long-Term Investment
Supplemental Cash Flow Information Related to Operating Leases [Abstract]
Supplemental cash flow information related to operating leases [Abstract]
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
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
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]
Disclosure of accounting policy for COVID-19 assessment.
COVID-19 Assessment [Policy Text Block]
COVID-19 Assessment
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
Name of the companies components suppliers.
Shengyi Semiconductor Technology Company Limited [Member]
Shengyi [Member]
Name of the companies a Chinese limited partnership.
Hefei Shixi Chanheng Integrated Circuit Industry Venture Capital Fund Partnership [Member]
Hefei Shixi [Member]
Name of the companies principal material supplier.
Ninebell Company Limited [Member]
Ninebell [Member]
Classification of Investments [Abstract]
Classification of Investments [Abstract]
The amount of investment in partnership.
Investment in Partnership
Investment in partnership
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]
The entire disclosure for long-term investment.
long-term investment [Text Block]
LONG-TERM INVESTMENT
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
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
Entity owned or controlled by another entity.
ACM Research (Cayman), Inc. [Member]
Entity owned or controlled by another entity.
ACM Research Korea CO., LTD [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 (Shanghai), Inc. [Member]
ACM Shanghai [Member]
ACM Research (Shanghai), Inc. [Member]
Entity owned or controlled by another entity.
Shengwei Research (Shanghai), Inc. [Member]
Shangwei Research (Shanghai), Inc. [Member]
Entity owned or controlled by another entity.
ACM Research (CA), Inc. [Member]
Entity owned or controlled by another entity.
ACM Research (Wuxi), Inc. [Member]
The amount of capital injected in the subsidiary.
Capital Injected in Subsidiary
Capital injected in subsidiary
Represents Second portion of investors.
Second Tranche Investors [Member]
Represents first portion of investors.
First Tranche Investors [Member]
Information of place and date of incorporation of an entity.
Name of Date of Incorporation
Date and place of Incorporation
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
Name of entity owned or controlled by another entity.
Name of Subsidiary
Name of subsidiaries
The percentage of ownership of common stock or equity participation of subsidiaries.
Subsidiaries Ownership Percentage
Effective interest held as at
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 equity interests acquired at the acquisition date in the business combination.
Business Acquisition, Percentage of Equity Interests Acquired
Purchase of equity interest percentage
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
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
The amount of registered capital.
Registered Capital
Registered capital
Business Description [Abstract]
Description of Business [Abstract]
Other items related to other long-term liabilities.
Other [Member]
Other [Member]
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 Tahoe-Single Bench Clean, commenced in 2020.
Subsidies to Tahoe-Single Bench Clean, Commenced in 2020 [Member]
Subsidies to Tahoe-Single Bench Clean, commenced in 2020 [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]
Subsidies to polytetrafluoroethylene, commenced in 2018.
Subsidies to Polytetrafluoroethylene [Member]
Subsidies to Polytetrafluoroethylene Project, Commenced in 2018 [Member]
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:
Conversion of warrants to common stock.
Warrant conversion to common stock
Warrant conversion to common stock