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Note 13 - Taxes on Income (Details) - Effective Income Tax Rate Reconciliation - USD ($) $ in Thousands | 12 Months Ended
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Jan. 03, 2016 | Dec. 28, 2014 | Dec. 29, 2013
Effective Income Tax Rate Reconciliation [Abstract] |  |  |
Income taxes at U.S federal statutory rate | $ 37,018 | $ 12,510 | $ 24,151
Increase (decrease) in taxes resulting from: |  |  |
State income taxes, net of federal tax effect | 3,003 | 57 | 496
Non-deductible business expenses | 614 | 570 | 601
Non-deductible employee compensation | 168 | 491 | 409
Tax effects of Company owned life insurance | 128 | (395) | (1,117)
Tax effects of undistributed earnings from foreign subsidiaries not deemed to be indefinitely reinvested | 458 | 362 | 562
Foreign and U.S. tax effects attributable to foreign operations | (3,347) | (3,021) | (3,958)
Valuation allowance effect – State NOL | (3,797) | 468 | 3,232
Non-deductible reserve against capital asset | 0 | 0 | (218)
Advance pricing agreements with tax authorities | 0 | 0 | (2,492)
Federal tax credits | (352) | 0 | (595)
Other | (545) | (108) | (322)
Income tax expense | $ 33,348 | $ 10,934 | $ 20,749

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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Income Tax Expense (or Benefit) -URI http://asc.fasb.org/extlink&oid=6515339 + Details
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