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Note 17 - Employee Benefit Plans - Assets at Fair Value (Details) - Foreign Plan [Member] - USD ($) $ in Thousands | Dec. 30, 2018 | Dec. 31, 2017 | Jan. 01, 2017
--- | --- | --- | ---
Asset Category: |  |  |
Target Allocation | 100.00% |  |
Percentage of Plan Assets at Year End | 100.00% | 100.00% |
Level 1 | $ 249,313 | $ 307,166 | $ 258,365
Dutch Plan [Member] |  |  |
Asset Category: |  |  |
Level 1 | 90,323 | 127,844 |
Uk Plan [Member] |  |  |
Asset Category: |  |  |
Level 1 | 158,990 | 179,322 |
Fair Value, Inputs, Level 1 [Member] |  |  |
Asset Category: |  |  |
Level 1 | 79,146 | 87,521 |
Fair Value, Inputs, Level 1 [Member] | Dutch Plan [Member] |  |  |
Asset Category: |  |  |
Level 1 | 0 | 0 |
Fair Value, Inputs, Level 1 [Member] | Uk Plan [Member] |  |  |
Asset Category: |  |  |
Level 1 | 79,146 | 87,521 |
Fair Value, Inputs, Level 2 [Member] |  |  |
Asset Category: |  |  |
Level 1 | 60,913 | 68,668 |
Fair Value, Inputs, Level 2 [Member] | Dutch Plan [Member] |  |  |
Asset Category: |  |  |
Level 1 | 0 | 0 |
Fair Value, Inputs, Level 2 [Member] | Uk Plan [Member] |  |  |
Asset Category: |  |  |
Level 1 | 60,913 | 68,668 |
Fair Value, Inputs, Level 3 [Member] |  |  |
Asset Category: |  |  |
Level 1 | 109,254 | 150,977 | $ 127,953
Fair Value, Inputs, Level 3 [Member] | Dutch Plan [Member] |  |  |
Asset Category: |  |  |
Level 1 | 90,323 | 127,844 |
Fair Value, Inputs, Level 3 [Member] | Uk Plan [Member] |  |  |
Asset Category: |  |  |
Level 1 | $ 18,931 | $ 23,133 |
Equity Securities [Member] |  |  |
Asset Category: |  |  |
Percentage of Plan Assets at Year End | 16.00% | 16.00% |
Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |
Asset Category: |  |  |
Level 1 | $ 39,392 | $ 48,285 |
Equity Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |
Asset Category: |  |  |
Level 1 | 0 | 0 |
Equity Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |
Asset Category: |  |  |
Level 1 | $ 0 | $ 0 |
Equity Securities [Member] | Minimum [Member] |  |  |
Asset Category: |  |  |
Target Allocation | 15.00% |  |
Equity Securities [Member] | Maximum [Member] |  |  |
Asset Category: |  |  |
Target Allocation | 20.00% |  |
Debt Securities [Member] |  |  |
Asset Category: |  |  |
Percentage of Plan Assets at Year End | 35.00% | 32.00% |
Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |
Asset Category: |  |  |
Level 1 | $ 33,134 | $ 36,780 |
Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |
Asset Category: |  |  |
Level 1 | 38,619 | 41,381 |
Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |
Asset Category: |  |  |
Level 1 | $ 16,012 | $ 19,883 |
Debt Securities [Member] | Minimum [Member] |  |  |
Asset Category: |  |  |
Target Allocation | 35.00% |  |
Debt Securities [Member] | Maximum [Member] |  |  |
Asset Category: |  |  |
Target Allocation | 45.00% |  |
Other Securities [Member] |  |  |
Asset Category: |  |  |
Percentage of Plan Assets at Year End | 49.00% | 52.00% |
Other Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |
Asset Category: |  |  |
Level 1 | $ 6,620 | $ 2,456 |
Other Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |
Asset Category: |  |  |
Level 1 | 22,294 | 27,287 |
Other Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |
Asset Category: |  |  |
Level 1 | $ 93,242 | $ 131,094 |
Other Securities [Member] | Minimum [Member] |  |  |
Asset Category: |  |  |
Target Allocation | 40.00% |  |
Other Securities [Member] | Maximum [Member] |  |  |
Asset Category: |  |  |
Target Allocation | 50.00% |  |

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- Definition Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(01) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(01) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(ii) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=112275985&loc=d3e4179-114921 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(ii) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
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- Definition Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=112275985&loc=d3e4179-114921 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(i) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
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