Summary of Significant Accounting Policies, Concentration of Credit Risk and Other Risks and Uncertainties (Details)	6 Months Ended
Jun. 30, 2024 Institution
Concentration of Credit Risk and Others Risks and Uncertainties [Abstract]
Number of financial institutions holding company's cash	2

Number of financial institutions holding the company's cash and cash equivalents.

No definition available.

Name:	vhc_ConcentrationRiskNumberOfFinancialInstitutions
Namespace Prefix:	vhc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration