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Note 9 - Segment Information - Financial Information for the Company's Reportable Segments (Details) - USD ($)
$ in Thousands
 3 Months Ended
Apr. 01, 2017
Apr. 02, 2016
Dec. 31, 2016
Net sales to external customers $ 90,632 $ 94,976  
Income before income taxes 4,595 5,272  
Capital expenditures, net 2,290 6,185  
Depreciation and amortization 3,926 3,811  
Total assets 192,256 196,015 $ 199,595
Retail [Member]      
Net sales to external customers 88,586 94,056  
Income before income taxes 3,817 5,196  
Capital expenditures, net 2,290 6,179  
Depreciation and amortization 3,908 3,769  
Total assets 184,021 188,999  
Commercial [Member]      
Net sales to external customers 1,607 481  
Income before income taxes 603 143  
Capital expenditures, net  
Depreciation and amortization 1 1  
Total assets 5,585 5,305  
International Franchising [Member]      
Net sales to external customers 439 439  
Income before income taxes 175 (67)  
Capital expenditures, net 6  
Depreciation and amortization 17 41  
Total assets $ 2,650 $ 1,711