v3.19.2
Document and Entity Information
Aug. 16, 2019
Cover [Abstract]  
Amendment Flag false
Entity Central Index Key 0001347178
Document Type 8-K
Document Period End Date Aug. 16, 2019
Entity Registrant Name VANDA PHARMACEUTICALS INC.
Entity Incorporation State Country Code DE
Entity File Number 001-34186
Entity Tax Identification Number 03-0491827
Entity Address, Address Line One 2200 Pennsylvania Avenue NW
Entity Address, Address Line Two Suite 300E
Entity Address, City or Town Washington
Entity Address, State or Province DC
Entity Address, Postal Zip Code 20037
City Area Code (202)
Local Phone Number 734-3400
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Security 12b Title Common Stock, par value $0.001
Trading Symbol VNDA
Security Exchange Name NASDAQ
Entity Emerging Growth Company false