Note 14 - Segment Information (Details) - Revenues and Total Assets by Geographic Area (USD $) In Thousands, unless otherwise specified	3 Months Ended									12 Months Ended
	Dec. 28, 2013		Sep. 28, 2013	Jun. 29, 2013	Mar. 30, 2013	Dec. 29, 2012	Sep. 29, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 28, 2013	Dec. 29, 2012
Revenues
Revenues	$ 45,849	[1]	$ 41,320	$ 42,379	$ 41,230	$ 37,019	$ 34,839	$ 35,753	$ 38,206	$ 170,778	$ 145,817
Total Assets
Assets	86,524					84,548				86,524	84,548
United States [Member]
Revenues
Revenues										130,589	120,327
Total Assets
Assets	62,198					68,364				62,198	68,364
Canada [Member]
Revenues
Revenues										34,989	20,641
Total Assets
Assets	22,993					14,612				22,993	14,612
Puerto Rico [Member]
Revenues
Revenues										5,200	4,849
Total Assets
Assets	$ 1,333					$ 1,572				$ 1,333	$ 1,572

[1] Includes severance and other charges of $4.8 million (see note 21).