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v3.25.2

Income taxes (Details Narrative) | 6 Months Ended
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Jun. 30, 2025
Income Tax Disclosure [Abstract] |
Percentage of taxable income | 80.00%

X
- Definition Percentage of taxable income. + References No definition available. + Details
Name: | GNTA_PercentageOfTaxableIncome
Namespace Prefix: | GNTA_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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