Note 8 - Components of Intangible Assets (Details) $ in Thousands	6 Months Ended
	Jul. 04, 2015 USD ($)
Engineering [Member]
Balance as of January 3, 2015	$ 189
Amortization of intangibles during the twenty-six week period ended July 4, 2015	34
Balance as of July 4, 2015	155
Information Technology [Member]
Balance as of January 3, 2015	5
Amortization of intangibles during the twenty-six week period ended July 4, 2015	$ 5
Balance as of July 4, 2015
Balance as of January 3, 2015	$ 194
Amortization of intangibles during the twenty-six week period ended July 4, 2015	39
Balance as of July 4, 2015	$ 155