Condensed Consolidated Statements of Stockholders' Equity (Unaudited) (Parentheticals) - USD ($) $ in Thousands	3 Months Ended
Sep. 30, 2025	Mar. 31, 2025
Additional Paid-in Capital [Member]
Issuance of common stock in connection with the Sales Agreement, net of issuance costs	$ 57	$ 37

The amount of decrease in additional paid in capital (APIC) resulting from direct costs associated with issuing common stock and warrants in connection with at-the-market offering. Includes, but is not limited to, legal and accounting fees and direct costs associated with stock issues under a shelf registration.

No definition available.

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Namespace Prefix:	vani_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration