Annual report pursuant to Section 13 and 15(d)

Cover Page

v3.21.1
Cover Page - USD ($)
5 Months Ended
Dec. 31, 2020
Mar. 15, 2021
Jun. 30, 2020
Document Information [Line Items]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2020    
Document Fiscal Year Focus 2020    
Document Fiscal Period Focus FY    
Document Annual Report true    
Document Transition Report false    
Entity Registrant Name Thayer Ventures Acquisition Corp    
Entity Central Index Key 0001820566    
Entity Incorporation, State or Country Code DE    
Current Fiscal Year End Date --12-31    
Entity File Number 001-39791    
Entity Tax Identification Number 85-2426959    
Entity Address, Address Line One 25852 McBean Parkway    
Entity Address, City or Town Valencia    
Entity Address, State or Province CA    
Entity Address, Postal Zip Code 91335    
City Area Code 415    
Local Phone Number 782-1414    
Title of 12(b) Security Class A common stock, par value $0.0001 per share    
Trading Symbol TVAC    
Security Exchange Name NASDAQ    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company true    
Entity Ex Transition Period false    
Entity Shell Company true    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Public Float     $ 0
ICFR Auditor Attestation Flag false    
Units [Member]      
Document Information [Line Items]      
Title of 12(b) Security Units, each consisting of one Class A common stock, $0.0001 par value    
Trading Symbol TVAC    
Security Exchange Name NASDAQ    
Warrant [Member]      
Document Information [Line Items]      
Title of 12(b) Security Redeemable Warrants, each whole warrant exercisable for one share of Class A common stock    
Trading Symbol TVAC    
Security Exchange Name NASDAQ    
Common Class A [Member]      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   17,250,000  
Common Class B [Member]      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   4,312,500