v3.20.1

Description of Business, Organization and Significant Concentrations and Risks (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2019
Credit concentration risk, customers or financial institutions | Cash and cash equivalents |
Significant Concentrations and Risks |
Schedule of Significant Concentrations and Risks | Cash and cash equivalents consist of cash on hand and cash at bank. Cash at bank are deposited in financial institutions at below locations:
|  | December 31, 2018 |  |  | December 31, 2019
|  | RMB |  |  | RMB
Financial institutions in the mainland of the PRC |  |  |  |  |  |
— Denominated in Renminbi (“RMB”) |  |  | 143,760,647 |  |  | 47,224,436
— Denominated in U.S. Dollar (“USD”) |  |  | 34 |  |  | 12,292,950
Total cash balances held at mainland PRC financial institutions |  |  | 143,760,681 |  |  | 59,517,386
Financial institutions in Hong Kong Special Administrative Region (“HKSAR”) of the PRC |  |  |  |  |  |
— Denominated in RMB |  |  | 672 |  |  | —
— Denominated in Hong Kong Dollar (“HKD”) |  |  | 8,064,121 |  |  | 2,875,819
— Denominated in USD |  |  | 38,358,069 |  |  | 91,793,594
— Denominated in Great Britain Pound |  |  | 402,799 |  |  | 2
Total cash and cash equivalents balances held at HKSAR financial institutions |  |  | 46,825,661 |  |  | 94,669,415
Total cash and cash equivalents balances held at financial institutions |  |  | 190,586,342 |  |  | 154,186,801
ATA Intelligent Learning |
Significant Concentrations and Risks |
Schedule of Financial Statement Amounts and Balances of Vie Included in Accompanying Consolidated Financial Statements | The following financial statement amounts and balances of ATA Intelligent Learning were included in the accompanying consolidated financial statements of the Company as of and for the years ended December 31, 2018 and 2019.
|  | December 31, 2018 |  |  | December 31, 2019
|  | RMB |  |  | RMB
Cash |  |  | 25,369,355 |  |  | 435,122
Prepaid expenses and other current assets |  |  | 32,860 |  |  | 4,180
Total current assets |  |  | 25,402,215 |  |  | 439,302
Long-term investments (i) |  |  | 5,919,198 |  |  | 89,605,550
Property and equipment, net |  |  | 8,382 |  |  | 11,972
Other non-current assets |  |  | — |  |  | 2,590
Total assets |  |  | 31,329,795 |  |  | 90,059,414
Accrued expenses and other payables |  |  | 455,577 |  |  | —
Payable for business acquisition |  |  | — |  |  | 19,642,082
Amounts due to a related party (ii) |  |  | 28,000,000 |  |  | 42,000,000
Total current liabilities |  |  | 28,455,577 |  |  | 61,642,082
Total liabilities |  |  | 28,455,577 |  |  | 61,642,082
|  | Year ended December 31, 2018 |  |  | Year ended December 31, 2019
|  | RMB |  |  | RMB
Net revenues |  |  | — |  |  | —
Net loss |  |  | (7,125,782 | ) |  | (14,456,886)
|  | Year ended December 31, 2018 |  |  | Year ended December 31, 2019
|  | RMB |  |  | RMB
Net cash used in operating activities |  |  | (172,145 | ) |  | (1,441,360)
Net cash used in investing activities (iii) |  |  | (12,458,500 | ) |  | (77,492,873)
Net cash received from financing activities (iii) |  |  | 38,000,000 |  |  | 54,000,000
| (i) | Long-term investments as of December 31, 2019 include investment cost and share of loss of 30.96% equity interest investment in Huanqiuyimeng, which is eliminated on consolidation.
| (ii) | Amounts due to a related party represent the amount due to ATA Education, which are eliminated on consolidation.
| (ii i) | For the year ended December 31, 2018, RMB 12,450,000 of net cash used in investing activities and RMB 38,000,000 of net cash received from financing activities were related to the transactions with ACG subsidiaries, which are eliminated on consolidation. For the year ended December 31, 2019, RMB 54,000,000 of net cash received from financing activities were related to the transactions with ACG subsidiaries, which are eliminated on consolidation. In addition, RMB71,483,973 of net cash used in investing activities were related to payments made for Huanqiuyimeng Acquisition.

X
- Definition Tabular disclosure of condensed financial statements, including, but not limited to, the balance sheet, income statement, and statement of cash flows. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 3 -Paragraph i -Subsection 10 + Details
Name: | srt_ScheduleOfCondensedFinancialStatementsTableTextBlock
Namespace Prefix: | srt_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Tabular disclosure of the nature of a concentration, a benchmark to which it is compared, and the percentage that the risk is to the benchmark. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13537-108611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13531-108611 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6327-108592 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6442-108592 + Details
Name: | us-gaap_SchedulesOfConcentrationOfRiskByRiskFactorTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ConcentrationRiskByTypeAxis=us-gaap_CreditConcentrationRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=us-gaap_CashAndCashEquivalentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis=aacg_AtaIntelligentLearningBeijingTechnologyLimitedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |