v3.20.1

Consolidated Statements of Cash Flows (Parenthetical) | 12 Months Ended
--- | ---
Dec. 31, 2018 CNY (¥)
Statement Of Cash Flows [Abstract] |
Cash disposed from disposal of discontinued operations | ¥ 147,738,996

X
- Definition Amount of cash disposed from disposal of discontinued operations. + References No definition available. + Details
Name: | aacg_DisposalOfDiscontinuedOperationsCashDisposed
Namespace Prefix: | aacg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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