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Summary of Significant Accounting Policies - Stock-Based Compensation (Details)	6 Months Ended
	Jun. 30, 2025
Summary of Significant Accounting Policies [Abstract]
Option vesting term	4 years

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- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

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Balance Type:	na
Period Type:	duration

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- References

No definition available.

+ Details

Name:	vhc_SignificantAccountingPoliciesLineItems
Namespace Prefix:	vhc_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration