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Coronavirus Pandemic (COVID-19) - Additional Information (Detail) - USD ($)	Jun. 30, 2022	Jun. 30, 2021
COVID-19 [Member]
Proceeds From Contribution In Aid Of Reimbursement of Lost Revenue	$ 11,100	$ 7,700

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- Definition

Proceeds From Contribution In Aid Of Reimbursement of Lost Revenue.

+ References

No definition available.

+ Details

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Namespace Prefix:	md_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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- Details

Name:	md_ExtraordinaryItemsAxis=md_CovidNinenteenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: