Note 7 - Goodwill (Details) - Changes in Carrying Amount of Goodwill (USD $) In Thousands, unless otherwise specified	Apr. 04, 2015	Jan. 03, 2015
Goodwill [Line Items]
Balance as of April 4, 2015	$ 10,223	$ 10,223
Engineering [Member]
Goodwill [Line Items]
Balance as of April 4, 2015	3,004
Information Technology [Member]
Goodwill [Line Items]
Balance as of April 4, 2015	5,516
Specialty Health Care [Member]
Goodwill [Line Items]
Balance as of April 4, 2015	$ 1,703