Note 14 - Segment Information (Details) - Total Assets by Geographic Area (USD $) In Thousands, unless otherwise specified	Jun. 28, 2014	Dec. 28, 2013	Jun. 29, 2013
Total assets
Total Assets	$ 94,650	$ 86,524	$ 84,471	[1]
United States [Member]
Total assets
Total Assets	68,869	62,198
Canada [Member]
Total assets
Total Assets	24,199	22,993
Puerto Rico [Member]
Total assets
Total Assets	$ 1,582	$ 1,333

[1] Certain prior year amounts have been reclassified to conform to fiscal 2014 presentation. These changes had no impact on previously reported results of operations or shareholder's equity.