Consolidated Statements of Income and Comprehensive Income (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Income Statement [Abstract]
Unrealized holding gain (loss) on investments, net of tax	$ 145	$ 140	$ 297	$ 395

Net Of Tax, Unrealized Holding Gain (Loss) on Investments

No definition available.

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