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Note 9 - Segment Information (Details) - Sales to External Customers and Long-lived Assets by Geographic Area (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 28, 2013
Sep. 29, 2012
Sep. 28, 2013
Sep. 29, 2012
Dec. 29, 2012
Note 9 - Segment Information (Details) - Sales to External Customers and Long-lived Assets by Geographic Area [Line Items]          
Net sales to external customers $ 84,812 $ 85,971 $ 270,979 $ 262,754  
Property and equipment, net 69,562 73,754 69,562 73,754 71,459
North America [Member]
          
Note 9 - Segment Information (Details) - Sales to External Customers and Long-lived Assets by Geographic Area [Line Items]          
Net sales to external customers 66,870 [1] 68,545 [1] 219,776 [1] 214,157 [1]  
Property and equipment, net 61,341 [1] 62,644 [1] 61,341 [1] 62,644 [1]  
Europe [Member]
          
Note 9 - Segment Information (Details) - Sales to External Customers and Long-lived Assets by Geographic Area [Line Items]          
Net sales to external customers 17,484 [2] 16,951 [2] 49,820 [2] 47,236 [2]  
Property and equipment, net 8,221 [2] 11,110 [2] 8,221 [2] 11,110 [2]  
Other Geographic Region [Member]
          
Note 9 - Segment Information (Details) - Sales to External Customers and Long-lived Assets by Geographic Area [Line Items]          
Net sales to external customers 458 [3] 475 [3] 1,383 [3] 1,361 [3]  
Property and equipment, net    [3]    [3]    [3]    [3]  
[1] North America includes the United States, Canada, Puerto Rico and franchise business in Mexico
[2] Europe includes the United Kingdom, Ireland and franchise businesses in Europe
[3] Other includes franchise businesses outside of North America and Europe