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Note 7 - Fair Value of Assets and Liabilities (Details Textual) - USD ($) $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2016 | Dec. 30, 2017 | Jan. 02, 2016
Intangible Assets, Net (Excluding Goodwill) | $ 213,027 | $ 203,850 |
Goodwill | 403,544 | 453,414 | $ 189,767
Industrial [Member] |  |  |
Goodwill | 43,194 | 38,626 | $ 51,259
Industrial [Member] | Custom Products Reporting Unit [Member] |  |  |
Impairment of Intangible Assets (Excluding Goodwill) | 6,015 |  |
Goodwill | 0 |  |
Industrial [Member] | Custom Products Reporting Unit [Member] | Trade Names [Member] |  |  |
Impairment of Intangible Assets (Excluding Goodwill) | 3,800 |  |
Intangible Assets, Net (Excluding Goodwill) | 700 |  |
Industrial [Member] | Custom Products Reporting Unit [Member] | Customer Relationships [Member] |  |  |
Impairment of Intangible Assets (Excluding Goodwill) | 2,200 |  |
Intangible Assets, Net (Excluding Goodwill) | 0 |  |
Fair Value, Measurements, Recurring [Member] |  |  |
Assets, Fair Value Disclosure | 0 | 0 |
Financial and Nonfinancial Liabilities, Fair Value Disclosure | $ 0 | $ 0 |

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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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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://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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 Reference 3: http://www.xbrl.org/2003/role/presentationRef -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 + Details
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