XML 48 R37.htm IDEA: XBRL DOCUMENT v3.20.2

Accounts Payable and Accrued Expenses - Additional Information (Detail) $ in Millions	6 Months Ended
	Jun. 30, 2020 USD ($)
Net decrease in accrued salaries and bonuses	$ 92.1

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:	debit
Period Type:	duration