Note 7 - Goodwill - Changes in Carrying Amount of Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 29, 2018	Dec. 30, 2017
Balance	$ 11,685	$ 12,325
Goodwill impairment	0	(3,478)
Balance	17,532	11,685
RAF Services, Inc [Member]
Goodwill recorded, acquisition		133
PSR Engineering Solutions d.o.o. Beograd (Voždovac) [Member]
Goodwill recorded, acquisition		2,705
TKE [Member]
Goodwill recorded, acquisition	5,847
Engineering [Member]
Balance	7,249	4,411
Goodwill impairment
Balance	13,096	7,249
Engineering [Member] \| RAF Services, Inc [Member]
Goodwill recorded, acquisition		133
Engineering [Member] \| PSR Engineering Solutions d.o.o. Beograd (Voždovac) [Member]
Goodwill recorded, acquisition		2,705
Engineering [Member] \| TKE [Member]
Goodwill recorded, acquisition	5,847
Specialty Health Care [Member]
Balance	2,398	2,398
Goodwill impairment
Balance	2,398	2,398
Specialty Health Care [Member] \| RAF Services, Inc [Member]
Goodwill recorded, acquisition
Specialty Health Care [Member] \| PSR Engineering Solutions d.o.o. Beograd (Voždovac) [Member]
Goodwill recorded, acquisition
Specialty Health Care [Member] \| TKE [Member]
Goodwill recorded, acquisition
Information Technology [Member]
Balance	2,038	5,516
Goodwill impairment		(3,478)
Balance	2,038	2,038
Information Technology [Member] \| RAF Services, Inc [Member]
Goodwill recorded, acquisition
Information Technology [Member] \| PSR Engineering Solutions d.o.o. Beograd (Voždovac) [Member]
Goodwill recorded, acquisition
Information Technology [Member] \| TKE [Member]
Goodwill recorded, acquisition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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