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Note 2 - Acquisition - Estimated Fair Value and Annual Amortization (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 30, 2021 | Dec. 31, 2021
Finite-Lived Intangible Asset, Expected Amortization, Year One |  | $ 1,286
Finite-Lived Intangible Asset, Expected Amortization, Year Two |  | 938
Finite-Lived Intangible Asset, Expected Amortization, Year Three |  | 927
Finite-Lived Intangible Asset, Expected Amortization, Year Four |  | 927
Finite-Lived Intangible Asset, Expected Amortization, Year Five |  | 783
UEHC [Member] |  |
Finite-Lived Intangible Asset, Expected Amortization, Year One | $ 724 |
Finite-Lived Intangible Asset, Expected Amortization, Year Two | 364 |
Finite-Lived Intangible Asset, Expected Amortization, Year Three | 364 |
Finite-Lived Intangible Asset, Expected Amortization, Year Four | 364 |
Finite-Lived Intangible Asset, Expected Amortization, Year Five | 364 |
Total, estimated fair value | 8,830 | $ 8,830
Customer Relationships [Member] | UEHC [Member] |  |
Finite-lived, estimated fair value | $ 4,070 |
Amortization period (Year) | 15 years |
Finite-Lived Intangible Asset, Expected Amortization, Year One | $ 271 |
Finite-Lived Intangible Asset, Expected Amortization, Year Two | 271 |
Finite-Lived Intangible Asset, Expected Amortization, Year Three | 271 |
Finite-Lived Intangible Asset, Expected Amortization, Year Four | 271 |
Finite-Lived Intangible Asset, Expected Amortization, Year Five | 271 |
Trade Names [Member] | UEHC [Member] |  |
Indefinite-lived, estimated fair value | 3,150 |
Customer Contracts [Member] | UEHC [Member] |  |
Finite-lived, estimated fair value | $ 1,130 |
Amortization period (Year) | 15 years |
Finite-Lived Intangible Asset, Expected Amortization, Year One | $ 75 |
Finite-Lived Intangible Asset, Expected Amortization, Year Two | 75 |
Finite-Lived Intangible Asset, Expected Amortization, Year Three | 75 |
Finite-Lived Intangible Asset, Expected Amortization, Year Four | 75 |
Finite-Lived Intangible Asset, Expected Amortization, Year Five | 75 |
Backlog [Member] | UEHC [Member] |  |
Finite-lived, estimated fair value | $ 360 |
Amortization period (Year) | 1 year |
Finite-Lived Intangible Asset, Expected Amortization, Year One | $ 360 |
Finite-Lived Intangible Asset, Expected Amortization, Year Two | 0 |
Finite-Lived Intangible Asset, Expected Amortization, Year Three | 0 |
Finite-Lived Intangible Asset, Expected Amortization, Year Four | 0 |
Finite-Lived Intangible Asset, Expected Amortization, Year Five | 0 |
Technology-Based Intangible Assets [Member] | UEHC [Member] |  |
Finite-lived, estimated fair value | $ 120 |
Amortization period (Year) | 7 years |
Finite-Lived Intangible Asset, Expected Amortization, Year One | $ 17 |
Finite-Lived Intangible Asset, Expected Amortization, Year Two | 17 |
Finite-Lived Intangible Asset, Expected Amortization, Year Three | 17 |
Finite-Lived Intangible Asset, Expected Amortization, Year Four | 17 |
Finite-Lived Intangible Asset, Expected Amortization, Year Five | $ 17 |

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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