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Operating Segment Information (Narrative) (Details)
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Revenue, Major Customer [Line Items]      
Number of Operating Segments 2    
Sales Revenue, Goods, Net [Member] | United States [Member]      
Revenue, Major Customer [Line Items]      
Percentage of sales 96.00% 96.00% 96.00%
Sales Revenue, Goods, Net [Member] | Davidsons [Member]      
Revenue, Major Customer [Line Items]      
Percentage of sales 19.00% 18.00% 19.00%
Sales Revenue, Goods, Net [Member] | Lipseys [Member]      
Revenue, Major Customer [Line Items]      
Percentage of sales 17.00% 17.00% 13.00%
Sales Revenue, Goods, Net [Member] | Jerrys And Ellett Brothers [Member]      
Revenue, Major Customer [Line Items]      
Percentage of sales 15.00% 11.00% 12.00%
Sales Revenue, Goods, Net [Member] | Sports South [Member]      
Revenue, Major Customer [Line Items]      
Percentage of sales 14.00% 13.00% 13.00%