Note 14 - Segment Information (Detail) - Total assets by geographic area (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011	Jul. 02, 2011
Total assets	$ 89,375	$ 86,178	$ 83,642
US [Member]
Total assets	77,294		68,727
Canada [Member]
Total assets	10,957		13,848
Puerto Rico [Member]
Total assets	1,124		735
Ireland [Member]
Total assets			$ 332