XML 20 R1.htm IDEA: XBRL DOCUMENT v3.20.4
Cover Page - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Feb. 04, 2021
Jun. 30, 2020
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2020    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Entity File Number 001-34186    
Entity Registrant Name VANDA PHARMACEUTICALS INC.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 03-0491827    
Entity Address, Address Line One 2200 Pennsylvania Avenue NW    
Entity Address, Address Line Two Suite 300 E    
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    
Title of 12(b) Security Common Stock, par value $0.001 per share    
Trading Symbol VNDA    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Entity Shell Company false    
Entity Public Float     $ 609.8
Entity Common Stock, Shares Outstanding   54,882,710  
Documents Incorporated by Reference
DOCUMENTS INCORPORATED BY REFERENCE
Specified portions of the registrant’s proxy statement with respect to the registrant’s 2021 Annual Meeting of Stockholders, which is to be filed pursuant to Regulation 14A within 120 days after the end of the registrant’s fiscal year ended December 31, 2020, are incorporated by reference into Part III of this Form 10-K.
    
Amendment Flag false    
Document Fiscal Year Focus 2020    
Document Fiscal Period Focus FY    
Entity Central Index Key 0001347178