v3.20.1

Leases - Summary of Short-term Lease Commitments (Details)	Dec. 31, 2019 CNY (¥)
Lessee Disclosure [Abstract]
2020	¥ 1,506,677
Short-term lease commitments	¥ 1,506,677

X

- Definition

Short term lease commitment amount for next twelve months.

+ References

No definition available.

+ Details

Name:	aacg_ShortTermLeaseCommitmentAmountForNextTwelveMonths
Namespace Prefix:	aacg_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	us-gaap_LesseeDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of short-term lease commitment.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918705-209980

+ Details

Name:	us-gaap_ShortTermLeaseCommitmentAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant