v3.26.1
Cover Page - shares
 6 Months Ended
Jun. 30, 2026
Jul. 20, 2026
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2026  
Document Transition Report false  
Entity File Number 001-38466  
Entity Registrant Name GOOSEHEAD INSURANCE, INC.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 82-3886022  
Entity Address, Address Line One 1500 Solana Blvd, Building 4, Suite 4500  
Entity Address, City or Town Westlake  
Entity Address, State or Province TX  
Entity Address, Postal Zip Code 76262  
City Area Code 469  
Local Phone Number 480-3669  
Title of 12(b) Security Class A Common Stock, par value $.01 per share  
Trading Symbol GSHD  
Security Exchange Name NASDAQ  
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  
Entity Shell Company false  
Entity Central Index Key 0001726978  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q2  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Class A common stock    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   23,802,805
Class B common stock    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   11,713,100