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Note 7 - Changes in Carrying Amount of Goodwill (Details)
$ in Thousands
9 Months Ended
Oct. 03, 2015
USD ($)
Engineering [Member] | SDS [Member]  
Goodwill recorded, SDS acquisition $ 1,407
Engineering [Member]  
Balance as of January 3, 2015 3,004
Balance as of October 3, 2015 4,411
Information Technology [Member]  
Balance as of January 3, 2015 5,516
Balance as of October 3, 2015 5,516
Specialty Health Care [Member]  
Balance as of January 3, 2015 1,703
Balance as of October 3, 2015 1,703
SDS [Member]  
Goodwill recorded, SDS acquisition 1,407
Balance as of January 3, 2015 10,223
Balance as of October 3, 2015 $ 11,630