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Note 8 - Sales to External Customers and Long-lived Assets by Geographic Area (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Oct. 03, 2015
Sep. 27, 2014
Oct. 03, 2015
Sep. 27, 2014
North America [Member]        
Net sales to external customers [1] $ 66,202 $ 68,067 $ 207,321 $ 209,400
Property and equipment, net [1] 53,544 54,284 53,544 54,284
Europe [Member]        
Net sales to external customers [2] 19,065 18,247 51,693 50,422
Property and equipment, net [2] 6,546 6,747 6,546 6,747
Other Geographic Region [Member]        
Net sales to external customers [3] $ 356 $ 347 $ 1,015 $ 1,030
Property and equipment, net [3]
Net sales to external customers $ 85,623 $ 86,661 $ 260,029 $ 260,852
Property and equipment, net $ 60,090 $ 61,031 $ 60,090 $ 61,031
[1] North America includes the United States, Canada, Puerto Rico and franchise business in Mexico
[2] Europe includes the United Kingdom, Ireland, Denmark (in 2015) and franchise businesses in Europe
[3] Other includes franchise businesses outside of North America and Europe