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Schedule of Investment Securities Non Broker Dealer (Details) - USD ($) | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Investment securities, at cost less impairment | $ 300,000 | $ 200,000
Simple Agreement On Future Equities [Member] |  |
Investment securities, at cost less impairment | $ 300,000 | $ 200,000

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- Definition Investment securities at cost less impairment non broker dealer. + References No definition available. + Details
Name: | MDBH_InvestmentSecuritiesAtCostLessImpairmentNonBrokerDealer
Namespace Prefix: | MDBH_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
Name: | us-gaap_StatementEquityComponentsAxis=MDBH_SimpleAgreementOnFutureEquitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |