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Accounts Payable and Accrued Expenses - Additional Information (Detail) $ in Millions	6 Months Ended
	Jun. 30, 2023 USD ($)
Net decrease in accrued salaries and bonuses	$ 80.9

X

- Definition

Increase (decrease) in accrued salaries and bonuses.

+ References

No definition available.

+ Details

Name:	md_IncreaseDecreaseInAccruedSalariesAndBonuses
Namespace Prefix:	md_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration