XML 25 R1.htm IDEA: XBRL DOCUMENT v3.20.4
Document and Entity Information - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Feb. 26, 2021
Oct. 28, 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    
Trading Symbol MAX    
Entity Registrant Name MediaAlpha, Inc.    
Entity Central Index Key 0001818383    
Current Fiscal Year End Date --12-31    
Entity Filer Category Non-accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company true    
Entity Ex Transition Period false    
Entity Public Float     $ 359.9
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Shell Company false    
Entity File Number 001-39671    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 85-1854133    
Entity Address, Address Line One 700 South Flower Street    
Entity Address, Address Line Two Suite 640    
Entity Address, City or Town Los Angeles    
Entity Address, State or Province CA    
Entity Address, Postal Zip Code 90017    
City Area Code 213    
Local Phone Number 316-6256    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
ICFR Auditor Attestation Flag false    
Title of 12(b) Security Class A Common Stock, $0.01 par value per share    
Security Exchange Name NYSE    
Document Annual Report true    
Document Transition Report false    
Documents Incorporated by Reference

DOCUMENTS INCORPORATED BY REFERENCE

None.

    
Class A Common      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   33,815,086  
Class B Common      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   25,536,043