XML 24 R7.htm IDEA: XBRL DOCUMENT
v3.19.3

Condensed Consolidated Statements of Cash Flows (Unaudited) (Parenthetical) $ in Thousands | 9 Months Ended
--- | ---
Sep. 30, 2019 USD ($)
Cash flows from financing activities: |
Direct issuance expenses | $ 2,287

X
- Definition This element represents the cash inflow from the net of direct expenses to the entity. + References No definition available. + Details
Name: | acmr_ProceedsFromIssuanceOfNetOfDirectExpenses
Namespace Prefix: | acmr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration