Note 6 - Prepaid Expenses - Summary of Prepaid Expenses (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Prepaid director and officer liability insurance	$ 20	$ 30
Prepaid supplies	167	190
Prepaid employee benefits	77	0
Prepaid rent	43	0
Prepaid software subscriptions	171	50
Prepaid consulting contracts	35	25
Prepaid research and development costs	65	40
Other	109	11
Total prepaid expenses and other current assets	687	346
Continuing and Discontinued Operations [Member]
Total prepaid expenses and other current assets	$ 687	$ 346

Amount of asset related to consideration paid in advance for other costs that provide economic benefits within a future period of one year or the normal operating cycle, if longer.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(7))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 340
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483032/340-10-45-1

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- Definition

Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer.

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- Definition

Amount of asset related to consideration paid in advance for insurance that provides economic benefits within a future period of one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 210
-SubTopic 10
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Reference 3: http://www.xbrl.org/2003/role/exampleRef
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- Definition

Amount of asset related to consideration paid in advance for rent that provides economic benefits within a future period of one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 210
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 340
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- Definition

Amount of consideration paid in advance for supplies that provide economic benefits within a future period of one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition

Amount of prepaid consulting contracts.

+ References

No definition available.

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- Definition

Amount of prepaid employee benefits.

+ References

No definition available.

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Balance Type:	debit
Period Type:	instant

- Definition

Amount of prepaid research and development costs.

+ References

No definition available.

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Namespace Prefix:	vbio_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of prepaid software subscriptions.

+ References

No definition available.

+ Details

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Namespace Prefix:	vbio_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

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Balance Type:
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