Note 8 - Intangible Assets (Details) - Components of intangible assets (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 29, 2013
Finite-Lived Intangible Assets [Line Items]
Balance as of December 29, 2012	$ 332
Amortization of intangibles during the twenty-six week period ended June 29, 2013	76
Balance as of June 29, 2013	256
Information Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Balance as of December 29, 2012	106
Amortization of intangibles during the twenty-six week period ended June 29, 2013	53
Balance as of June 29, 2013	53
Engineering [Member]
Finite-Lived Intangible Assets [Line Items]
Balance as of December 29, 2012	226
Amortization of intangibles during the twenty-six week period ended June 29, 2013	23
Balance as of June 29, 2013	$ 203