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Document and Entity Information (USD $)
 12 Months Ended
Dec. 31, 2014
Feb. 16, 2015
Jun. 30, 2014
Document and Entity Information [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2014    
Entity Registrant Name STURM RUGER & CO INC    
Entity Central Index Key 0000095029    
Trading Symbol RGR    
Current Fiscal Year End Date --12-31    
Document Fiscal Year Focus 2014    
Document Fiscal Period Focus FY    
Entity Filer Category Large Accelerated Filer    
Entity Voluntary Filers No    
Entity Well-Known Seasoned Issuer Yes    
Entity Current Reporting Status Yes    
Entity Common Stock, Shares Outstanding   18,737,000dei_EntityCommonStockSharesOutstanding  
Entity Public Float     $ 1,145,793,000dei_EntityPublicFloat