XML 70 R47.htm IDEA: XBRL DOCUMENT
v3.20.1

Commitments and Contingencies - (VQW-765) - Additional Information (Detail) | 3 Months Ended
--- | ---
Mar. 31, 2020
VQW-765 |
Commitments and Contingencies [Line Items] |
Future percentage of royalty payments based net sales | mid-teens

X
- Definition Commitments and contingencies. + References No definition available. + Details
Name: | vnda_CommitmentsAndContingenciesLineItems
Namespace Prefix: | vnda_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Future Percentage Of Royalty Payments Based On Net Sales. + References No definition available. + Details
Name: | vnda_FuturePercentageOfRoyaltyPaymentsBasedOnNetSales
Namespace Prefix: | vnda_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=vnda_VQW765Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |