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Summary of Significant Accounting Policies (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Segment Reporting Information [Line Items]      
Advertising expenses $ 3,400 $ 2,900 $ 2,300
Shipping costs 5,600 3,500 3,000
Research and development $ 5,900 $ 4,000 $ 3,200
Buildings [Member]
     
Segment Reporting Information [Line Items]      
Useful life 15 years    
Machinery and equipment [Member]
     
Segment Reporting Information [Line Items]      
Useful life 10 years    
Tools and dies [Member]
     
Segment Reporting Information [Line Items]      
Useful life 3 years    
Net firearms sales [Member]
     
Segment Reporting Information [Line Items]      
Percentage of sales 99.00%    
Net castings sales [Member]
     
Segment Reporting Information [Line Items]      
Percentage of sales 1.00%    
Export firearm sales [Member]
     
Segment Reporting Information [Line Items]      
Percentage of sales 3.00%