Note 14 - Segment Information (Detail) - Revenues by geographic area (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jul. 02, 2011	Jun. 30, 2012	Jul. 02, 2011
Revenues	$ 35,753	$ 36,514	$ 73,959	$ 75,220
US [Member]
Revenues	30,560	29,844	62,753	61,547
Canada [Member]
Revenues	3,996	6,137	9,196	12,615
Puerto Rico [Member]
Revenues	1,197	521	2,010	1,036
Ireland [Member]
Revenues		$ 12		$ 22