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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: