XML 74 R55.htm IDEA: XBRL DOCUMENT
v3.20.4

Intangible Assets - HETLIOZ - Additional Information (Detail) - USD ($) $ in Thousands | 1 Months Ended | 3 Months Ended | 12 Months Ended | 203 Months Ended
--- | --- | --- | --- | ---
Apr. 30, 2018 | Jan. 31, 2014 | Mar. 31, 2015 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |
Acquisition of intangible assets |  |  |  | $ 0 | $ 0 | $ 25,000 |
HETLIOZ® |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |
Acquisition of intangible assets |  | $ 8,000 |  |  |  | $ 25,000 | $ 37,500
Cumulative worldwide sales milestone | $ 250,000 |  |  |  |  |  |
Intangible assets capitalized |  |  | $ 25,000 |  |  |  | $ 33,000

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_FiniteLivedIntangibleAssetsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of increase (decrease) in carrying value of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References No definition available. + Details
Name: | us-gaap_FiniteLivedIntangibleAssetsPeriodIncreaseDecrease
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition The cash outflow to acquire asset without physical form usually arising from contractual or other legal rights, excluding goodwill. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsToAcquireIntangibleAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Net cumulative worldwide sales to achieve milestone and trigger payment of milestone obligation. + References No definition available. + Details
Name: | vnda_CumulativeNetSalesToAchieveMilestone
Namespace Prefix: | vnda_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | srt_ProductOrServiceAxis=vnda_HetliozMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |