XML 82 R65.htm IDEA: XBRL DOCUMENT
v3.21.1

Business Combinations (Details) - CNY (¥) ¥ in Thousands | 1 Months Ended | 12 Months Ended
--- | --- | ---
May 31, 2019 | Jun. 25, 2018 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Business Combinations (Details) [Line Items] |  |  |  |  |
Equity interests acquirees percentage | 100.00% |  |  |  |
Cash consideration | ¥ 15,010 |  |  | ¥ 1,275 |
Revenue of the acquirees |  |  |  | 23,999 |
Net loss of the acquirees |  |  |  | 6,585 |
Business combination fair values of recognized amortized |  |  |  | 200 |
Goodwill |  |  |  | ¥ 25,253 |
Non-controlling interest represents the fair value of the equity interest percentage |  |  |  |  | 20.00%
Business combinations, description |  |  | The fair values of the trademark of RMB16,200, the backlog of RMB5,815, the customer relationship of RMB11,400 and the favorable lease assets of RMB 7,565 are amortized over 10 years, 3 years, 5.5 years and 3 years, respectively on a straight line basis. The goodwill of RMB 221,888, which was primarily attributable to the synergies expected to be achieved from the acquisition, was assigned to junior English training unit and is not deductible for tax purposes. |  |
ABC Education [Member] |  |  |  |  |
Business Combinations (Details) [Line Items] |  |  |  |  |
Cash consideration |  | ¥ 139,040 |  |  |
Revenue of the acquirees |  |  |  |  | ¥ 62,791
Net loss of the acquirees |  |  |  |  | ¥ 11,520
Equity interests percentage |  | 80.00% |  |  |

X
- Definition Business combinations, description. + References No definition available. + Details
Name: | metx_BusinessCombinationsDescription
Namespace Prefix: | metx_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Net loss of the acquirees. + References No definition available. + Details
Name: | metx_NetLossOfTheAcquirees
Namespace Prefix: | metx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Non-controlling interest represents the fair value of the equity interest percentage. + References No definition available. + Details
Name: | metx_NoncontrollingInterestRepresentsTheFairValueOfTheEquityInterestPercentage
Namespace Prefix: | metx_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Revenue of the acquirees. + References No definition available. + Details
Name: | metx_RevenueOfTheAcquirees
Namespace Prefix: | metx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount, measured at other than acquisition-date fair value, of all the assets acquired that arise from contingencies and were recognized by the entity, if the acquisition-date fair value cannot be determined and other criteria (as defined) related to the contingencies have been met. + References No definition available. + Details
Name: | us-gaap_BusinessCombinationAssetsArisingFromContingenciesAmountRecognizedOtherThanAtFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6613-128477 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120321790&loc=d3e6927-128479 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6578-128477 + Details
Name: | us-gaap_BusinessCombinationConsiderationTransferred1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Percentage of voting equity interests acquired in a business combination achieved in stages, including equity interests in the acquiree held by the acquirer immediately before the acquisition date and acquired at the acquisition date. + References No definition available. + Details
Name: | us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeIncludingSubsequentAcquisitionPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 + Details
Name: | us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount before accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 + Details
Name: | us-gaap_GoodwillGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=metx_ABCEducationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |