Note 8 - Intangible Assets (Detail) - Components of intangible assets (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2013
Balance	$ 332
Amortization of intangibles during the thirteen week period ended March 30, 2013	38
Balance	294
Information Technology [Member]
Balance	106
Amortization of intangibles during the thirteen week period ended March 30, 2013	26
Balance	80
Engineering [Member]
Balance	226
Amortization of intangibles during the thirteen week period ended March 30, 2013	12
Balance	$ 214