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Coronavirus Pandemic (COVID-19) - Additional Information (Detail) - USD ($) $ in Millions | Sep. 30, 2023 | Sep. 30, 2022
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COVID-19 [Member] |  |
Proceeds From Contribution In Aid Of Reimbursement of Lost Revenue | $ 0.3 | $ 11.4

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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: |