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Commitments and Contingencies - Fanapt - Additional Information (Details) - Fanapt® |  | 60 Months Ended
--- | --- | ---
Dec. 31, 2014 | Dec. 31, 2019
Commitments and Contingencies [Line Items] |  |
Royalty payable percentage on net sales | 6.00% | 3.00%
Royalty payment period | 10 years |

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- Definition Commitments and contingencies. + References No definition available. + Details
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Period Type: | duration

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- Definition Royalty payable percentage under a contractual arrangement for use of technology or intellectual property. + References No definition available. + Details
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Namespace Prefix: | vnda_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
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- Definition Royalty Period + References No definition available. + Details
Name: | vnda_RoyaltyPeriod
Namespace Prefix: | vnda_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |