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Note 8 - Benefit Plans (Details Textual) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 02, 2016 | Oct. 03, 2015 | Dec. 30, 2017 | Dec. 31, 2016 | Jan. 02, 2016
Premium Refund of Annuity Contract | $ 300 |  |  | $ 300 |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement |  |  |  |  | $ (29,928)
Defined Benefit Plan, Expected Amortization, Next Fiscal Year |  |  | 300 |  |
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year |  |  | 1,400 |  |
Other Assets [Member] |  |  |  |  |
Defined Contribution Plan, Plan Assets |  |  | 8,000 |  |
Other Long-term Liabilities [Member] |  |  |  |  |
Deferred Compensation Arrangement with Individual, Recorded Liability |  |  | $ 8,000 |  |
401(K) Savings Plan [Member] |  |  |  |  |
Defined Contribution Plan, Employer Matching Contribution, Percent of Match |  |  | 100.00% |  |
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay |  |  | 4.00% |  |
Defined Contribution Plan, Employer Discretionary Matching Contribution, Percent of Employees' Gross Pay |  |  | 2.00% |  |
Defined Contribution Plan, Employer Discretionary Contribution Amount |  |  | $ 3,500 | $ 3,200 | $ 2,800
Foreign Plan [Member] |  |  |  |  |
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets |  |  | 4.50% |  |
Pension Plan [Member] |  |  |  |  |
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets |  |  | 4.50% | 4.90% |
Pension Plan [Member] | UNITED STATES |  |  |  |  |
Payment for Pension Benefits |  | $ 9,100 |  |  |
Define Benefit Plan, Pre-tax Settlement Charge |  | $ 30,200 |  |  |
Defined Benefit Plan, Accumulated Benefit Obligation |  |  | $ 60,500 | $ 51,300 |
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets |  |  |  |  | 6.80%
Pension Plan [Member] | Foreign Plan [Member] |  |  |  |  |
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets |  |  |  |  | 5.10%
Supplemental Employee Retirement Plan [Member] |  |  |  |  |
Defined Contribution Plan, Employer Discretionary Contribution Amount |  |  | $ 300 |  |

X
- Definition The amount of pre-tax charge recognized during the period from the settlement of the plan's liabilities. + References No definition available. + Details
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- Definition Percentage of employees' gross pay for which the employer contributes an additional discretionary matching contribution to a defined contribution plan. + References No definition available. + Details
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- Definition Amount of asset, recognized in statement of financial position, for assets in a defined contribution plan. + References No definition available. + Details
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- Definition The carrying amount of the liability as of the balance sheet date to an individual under a deferred compensation arrangement. This amount may be the result of periodic accruals made over the period of active employment, or reflect termination benefits resulting contractual terms or a death benefit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 710 -SubTopic 10 -Section 30 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6409875&loc=d3e20015-108363 + Details
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- Definition Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, used to determine net periodic benefit cost of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(3) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Amount of cost (credit) included in accumulated other comprehensive (income) loss expected to be recognized in net periodic benefit cost (credit) for fiscal year following most recent annual statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (s) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Amount of contributions expected to be received by defined benefit plan from employer in next fiscal year following latest fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit from irrevocable action relieving primary responsibility for benefit obligation and eliminating risk related to obligation and assets used to effect settlement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(7) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. + References No definition available. + Details
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- Definition Amount of payment for pension benefits. Excludes other postretirement benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3536-108585 + Details
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