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Note 7 - Goodwill - Changes in Carrying Amount of Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016
Balance	$ 12,325	$ 11,630
Balance	11,685	12,325
Goodwill impairment	(3,478)	0
Allied Health Professionals, LLC [Member]
Goodwill recorded, acquisition		695
RAF Services, Inc [Member]
Goodwill recorded, acquisition	133
PSR Engineering Solutions d.o.o. Beograd (Voždovac) [Member]
Goodwill recorded, acquisition	2,705
Engineering [Member]
Balance	4,411	4,411
Balance	7,249	4,411
Goodwill impairment
Engineering [Member] | Allied Health Professionals, LLC [Member]
Goodwill recorded, acquisition
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
Specialty Health Care [Member]
Balance	2,398	1,703
Balance	2,398	2,398
Goodwill impairment
Specialty Health Care [Member] | Allied Health Professionals, LLC [Member]
Goodwill recorded, acquisition		695
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
Information Technology [Member]
Balance	5,516	5,516
Balance	2,038	5,516
Goodwill impairment	(3,478)
Information Technology [Member] | Allied Health Professionals, LLC [Member]
Goodwill recorded, acquisition
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

X

- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
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-Section 45
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-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
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-URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975

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- Definition

Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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- Definition

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267

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-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13777-109266

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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