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Cover Page - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Feb. 17, 2023
Jun. 24, 2022
Document Information [Line Items]      
Document Annual Report true    
Document Transition Report false    
Document Type 10-K    
Document Period End Date Dec. 31, 2022    
Entity Current Reporting Status Yes    
Entity Filer Category Large Accelerated Filer    
Entity Registrant Name THE BOSTON BEER COMPANY, INC.    
Entity Interactive Data Current Yes    
ICFR Auditor Attestation Flag true    
Entity Shell Company false    
Entity Small Business false    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Emerging Growth Company false    
Entity File Number 1-14092    
Entity Incorporation, State or Country Code MA    
Entity Tax Identification Number 04-3284048    
Entity Address, Address Line One One Design Center Place, Suite 850    
Entity Address, City or Town Boston    
Entity Address, State or Province MA    
Entity Address, Postal Zip Code 02210    
City Area Code 617    
Local Phone Number 368-5000    
Amendment Flag false    
Document Fiscal Year Focus 2022    
Document Fiscal Period Focus FY    
Entity Central Index Key 0000949870    
Current Fiscal Year End Date --12-31    
Trading Symbol SAM    
Security Exchange Name NYSE    
Title of 12(b) Security Class A Common Stock    
Entity Public Float     $ 3,232,820
Documents Incorporated by Reference

Certain parts of the registrant’s definitive Proxy Statement for its 2023 Annual Meeting to be held on May 17, 2023 are incorporated by reference into Part III of this report.

    
Auditor Name Deloitte & Touche LLP    
Auditor Location Boston, Massachusetts    
Auditor Firm ID 34    
Common Class A      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   10,212,573  
Common Class B      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   2,068,000