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v3.25.1

Commitments and Contingencies (Details) | Mar. 31, 2025
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Commitments and Contingencies |
Number of new material commitments | 0

X
- Definition Number of new material commitments entered into during the period. + References No definition available. + Details
Name: | mgtx_NumberOfNewMaterialCommitments
Namespace Prefix: | mgtx_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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