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Note 15 - Income Taxes (Details Textual) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 29, 2018 | Dec. 30, 2017 | Dec. 31, 2016
Tax Adjustments, Settlements, and Unusual Provisions |  | $ 1,200 |
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability |  | 1,000 |
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Amount |  | $ 198 |
Effective Income Tax Rate Reconciliation, Percent |  | 920.40% | 46.80%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent |  | 34.00% | 34.00%
Income Tax Expense (Benefit) |  | $ (2,255) | $ 1,544
Effective Income Tax Rate Reconciliation, Tax Credit, Amount |  | 603 |
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount |  | 458 | 186
Effective Income Tax Rate Reconciliation, Deduction, Amount |  | 2,861 |
Foreign Income Tax Expense (Benefit), Continuing Operations |  | (369) |
Income Tax Examination, Penalties and Interest Expense |  | 0 | $ 0
Scenario, Forecast [Member] |  |  |
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent | 21.00% |  |
Puerto Rico Department of Treasury [Member] |  |  |
Income Tax Expense (Benefit) |  | $ (248) |
Foreign Tax Authority [Member] | Canada Revenue Agency [Member] |  |  |
Effective Income Tax Rate Reconciliation, Percent |  | 26.50% |
Foreign Tax Authority [Member] | Ministry of Finance, Republic of Serbia [Member] | Minimum [Member] |  |  |
Effective Income Tax Rate Reconciliation, Percent |  | 15.00% |
Foreign Tax Authority [Member] | Ministry of Finance, Republic of Serbia [Member] | Maximum [Member] |  |  |
Effective Income Tax Rate Reconciliation, Percent |  | 20.00% |
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member] | Tax Year 2011 [Member] |  |  |
Income Tax Examination, Year under Examination |  | 2011 |
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member] | Tax Year 2012 [Member] |  |  |
Income Tax Examination, Year under Examination |  | 2012 |
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member] | Tax Year 2013 [Member] |  |  |
Income Tax Examination, Year under Examination |  | 2013 |
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member] | Tax Year 2015 [Member] |  |  |
Income Tax Examination, Year under Examination |  | 2015 |
State and Local Jurisdiction [Member] | New Jersey Division of Taxation [Member] | Earliest Tax Year [Member] |  |  |
Income Tax Examination, Year under Examination |  | 2009 |
State and Local Jurisdiction [Member] | New Jersey Division of Taxation [Member] | Latest Tax Year [Member] |  |  |
Income Tax Examination, Year under Examination |  | 2012 |

X
- Definition Percentage 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 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 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)(2)) -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 -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 + Details
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- Definition Amount of current and deferred foreign income tax expense (benefit) attributable to income (loss) from continuing operations. + References Reference 1: 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)(1)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition The sum of the amounts of estimated penalties and interest recognized in the period arising from income tax examinations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319 + Details
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to deductions. Including, but not limited to, extraterritorial income exclusion deduction, qualified production activity deduction, dividend deduction, deduction for dividend paid to employee stock ownership plan, Medicare prescription drug benefit subsidy deduction, and other deductions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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