XML 85 R66.htm IDEA: XBRL DOCUMENT v3.20.4

Commitments and Contingencies - Purchase Commitments (Detail)	12 Months Ended
	Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Agreements for clinical and marketing services, termination notice period	90 days

X

- References

No definition available.

+ Details

Name:	us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Agreements For Clinical And Marketing Services, Termination Notice Period

+ References

No definition available.

+ Details

Name:	vnda_AgreementsForClinicalAndMarketingServicesTerminationNoticePeriod
Namespace Prefix:	vnda_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration