XML 57 R45.htm IDEA: XBRL DOCUMENT
v3.21.1

REDEEMABLE NON-CONTROLLING INTERESTS (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2021
REDEEMABLE NON-CONTROLLING INTERESTS [Abstract] |
Components of Change in Redeemable Non-controlling Interests | The components of the change in the redeemable non-controlling interests for the three months ended March 31, 2020 are presented in the following table:
Balance at December 31, 2019 |  | $ | 60,162 |
Net income attributable to redeemable non-controlling interests |  |  | 258 |
Effect of foreign currency translation gain attributable to redeemable non-controlling interests |  |  | (953 | )
Balance at March 31, 2020 |  | $ | 59,467 |

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

X
- Definition Tabular disclosure of redeemable noncontrolling interest (as defined) included in the statement of financial position as either a liability or temporary equity. As of the date of the statement of financial position, such redeemable noncontrolling interest is currently redeemable, as defined, for cash or other assets of the entity at (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the entity. + References No definition available. + Details
Name: | us-gaap_RedeemableNoncontrollingInterestTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration