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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 |  |

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- 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 + Details
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