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Note 14 - Segment Information - Continuing Operations (Detail) - Revenues and total assets by geographic area (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 12 Months Ended
Dec. 29, 2012
Sep. 29, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Oct. 01, 2011
Jul. 02, 2011
Apr. 02, 2011
Dec. 29, 2012
Dec. 31, 2011
Revenues                    
Revenues $ 37,019 $ 34,839 $ 35,753 $ 38,206 $ 35,032 $ 33,559 $ 36,514 $ 38,706 $ 145,817 $ 143,811
Total Assets                    
Total Assets 84,548       86,178       84,548 86,178
United States [Member]
                    
Revenues                    
Revenues                 120,327 118,729
Total Assets                    
Total Assets 68,364       73,314       68,364 73,314
Canada [Member]
                    
Revenues                    
Revenues                 20,641 22,880
Total Assets                    
Total Assets 14,612       12,204       14,612 12,204
Puerto Rico [Member]
                    
Revenues                    
Revenues                 4,849 2,180
Total Assets                    
Total Assets 1,572       654       1,572 654
Ireland [Member]
                    
Revenues                    
Revenues                   22
Total Assets                    
Total Assets         $ 6         $ 6