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Note 15 - Segment Information - Sales to External Customers and Long-lived Assets by Geographic Area (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Jan. 02, 2016
Jan. 03, 2015
Net sales to external customers $ 364,204 $ 377,694 $ 392,354
Property and equipment, net 74,924 67,741 62,766
North America [Member]      
Net sales to external customers [1] 296,152 297,554 308,939
Property and equipment, net [1] 66,154 61,211 56,400
Europe [Member]      
Net sales to external customers [2] 66,140 78,788 81,848
Property and equipment, net [2] 8,733 6,459 6,366
Other Geographic Region [Member]      
Net sales to external customers [3] 1,912 1,352 1,567
Property and equipment, net [3] $ 37 $ 71
[1] North America includes the United States, Canada, Puerto Rico and franchise business in Mexico
[2] Europe includes the United Kingdom, Ireland, Denmark and franchise businesses in Europe
[3] Other includes franchise businesses outside of North America and Europe and, beginning in 2016, a company-owned store in China