Other Income (Details) $ in Millions	1 Months Ended
Apr. 30, 2020 USD ($)
Other Income and Expenses [Abstract]
Government grant received	$ 3.5

Coronavirus Aid, Relief, and Economic Security, Government Grant Received

No definition available.

Name:	vmd_CoronavirusAidReliefandEconomicSecurityGovernmentGrantReceived
Namespace Prefix:	vmd_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration