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Accrued expenses (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Payables and Accruals [Abstract]
Clinical trial and other development costs	$ 5,959	$ 752
Professional fees and general corporate costs	5,095	2,039
People related costs	3,964	794
Debt issuance costs	4,612	0
Total accrued expenses	$ 19,630	$ 3,585

X

- Definition

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.20)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

+ Details

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X

- Definition

Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.20)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

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X

- References

No definition available.

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Balance Type:	na
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X

- Definition

Accrued Debt Issuance Costs, Current

+ References

No definition available.

+ Details

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X

- Definition

Accrued Professional Fees, Listing, And General Corporate Costs, Current

+ References

No definition available.

+ Details

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X

- Definition

Accrued Research And Development Fees, Current

+ References

No definition available.

+ Details

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Namespace Prefix:	vrna_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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