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Document and Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2021
Feb. 15, 2022
Jun. 30, 2021
Cover [Abstract]      
Entity Central Index Key 0000095029    
Document Fiscal Year Focus 2021    
Document Fiscal Period Focus FY    
Current Fiscal Year End Date --12-31    
Amendment Flag false    
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2021    
Document Transition Report false    
Entity File Number 0-4776    
Entity Registrant Name STURM, RUGER & COMPANY, INC.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 06-0633559    
Entity Address, Address Line One 1 Lacey Place    
Entity Address, City or Town Southport    
Entity Address, State or Province CT    
Entity Address, Postal Zip Code 06890    
City Area Code 203    
Local Phone Number 259-7843    
Title of 12(b) Security Common Stock, $1 par value    
Trading Symbol RGR    
Name of Exchange on which Security is Registered NYSE    
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    
Auditor Attestation Flag true    
Entity Shell Company false    
Entity Public Float     $ 1,568,608,300
Entity Common Stock, Shares Outstanding   17,596,600  
Documents Incorporated By Reference Text Block

DOCUMENTS INCORPORATED BY REFERENCE.

Portions of the registrant’s Proxy Statement relating to the 2022 Annual Meeting of Stockholders to be held May 9, 2022 are incorporated by reference into Part III (Items 10 through 14) of this Report.

   
Auditor Name RSM US LLP    
Auditor Location Stamford, Connecticut    
Auditor Firm Id 49