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Income Taxes (Tables) | 12 Months Ended
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Dec. 30, 2016
Income Tax Disclosure [Abstract] |
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] | The provision (benefit) for income taxes consists of the following (in thousands):
|  | 2016 |  | 2015 |  | 2014 |
Current tax provision: |  |  |  |  |  |  |  |  |  |
U.S. federal (benefit) |  | $ | — |  | $ | — |  | $ | 3 |
State |  |  | 18 |  |  | 12 |  |  | 15 |
Foreign |  |  | 1,031 |  |  | 443 |  |  | 570 |
Total current provision |  |  | 1,049 |  |  | 455 |  |  | 588 |
Deferred tax provision (benefit): |  |  |  |  |  |  |  |  |  |
Foreign provision (benefit) |  |  | (1,364) |  |  | 473 |  |  | (841) |
Total deferred provision (benefit) |  |  | (1,364) |  |  | 473 |  |  | (841) |
Provision (benefit) for income taxes |  | $ | (315) |  | $ | 928 |  | $ | (253) |
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] | The provision (benefit) for income before taxes differs from the amount computed by applying the statutory federal income tax rate to income before taxes as follows (in thousands):
|  | 2016 |  |  | 2015 |  |  | 2014 |
Computed provision (benefit) for taxes based on income at statutory rate |  |  | 34.0 | % |  | $ | (4,231) |  |  |  | 34.0 | % |  | $ | (1,905) |  |  |  | 34.0 | % |  | $ | (2,939) |
Increase (decrease) in taxes resulting from: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Permanent differences |  |  | (3.0) |  |  |  | 373 |  |  |  | (0.6) |  |  |  | 33 |  |  |  | (0.2) |  |  |  | 20 |
Federal minimum taxes |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (0.1) |  |  |  | 3 |
State minimum taxes, net of federal income tax benefit |  |  | (0.1) |  |  |  | 12 |  |  |  | (0.1) |  |  |  | 8 |  |  |  | (0.1) |  |  |  | 10 |
State tax benefit |  |  | 6.2 |  |  |  | (767) |  |  |  | (6.6) |  |  |  | 370 |  |  |  | 4.6 |  |  |  | (394) |
Tax rate difference due to foreign statutory rate |  |  | (8.9) |  |  |  | 1,109 |  |  |  | 1.6 |  |  |  | (90) |  |  |  | 3.3 |  |  |  | (288) |
Expiration of state net operating tax carryforwards |  |  | (7.2) |  |  |  | 892 |  |  |  | (47.3) |  |  |  | 2,650 |  |  |  | — |  |  |  | — |
Foreign earnings not permanently reinvested |  |  | 6.5 |  |  |  | (809) |  |  |  | (9.8) |  |  |  | 547 |  |  |  | 0.1 |  |  |  | (11) |
Foreign dividend withholding |  |  | 3.8 |  |  |  | (478) |  |  |  | (3.8) |  |  |  | 211 |  |  |  | (1.5) |  |  |  | 132 |
Expiration of charitable contribution carryover |  |  | (0.1) |  |  |  | 12 |  |  |  | (0.3) |  |  |  | 15 |  |  |  | (0.2) |  |  |  | 18 |
Other |  |  | 1.2 |  |  |  | (151) |  |  |  | 2.5 |  |  |  | (140) |  |  |  | 1.0 |  |  |  | (85) |
Valuation allowance |  |  | (29.9) |  |  |  | 3,723 |  |  |  | 13.8 |  |  |  | (771) |  |  |  | (38.0) |  |  |  | 3,281 |
Effective tax provision (benefit) rate |  |  | 2.5 | % |  | $ | (315) |  |  |  | (16.6) | % |  | $ | 928 |  |  |  | 2.9 | % |  | $ | (253) |
Schedule of Deferred Tax Assets and Liabilities [Table Text Block] | Significant components of the Company's deferred tax assets (liabilities) as of December 30, 2016 and January 1, 2016 are as follows (in thousands):
|  | 2016 |  | 2015 |
Current deferred tax assets (liabilities): |  |  |  |  |  |  |
Allowance for doubtful accounts and sales returns |  | $ | 245 |  | $ | 90 |
Inventories |  |  | 662 |  |  | 422 |
Accrued vacation |  |  | 437 |  |  | 382 |
Accrued other expenses |  |  | 596 |  |  | 176 |
Other |  |  | 66 |  |  | 57 |
Valuation allowance |  |  | (1,615) |  |  | (1,058) |
Total current deferred tax assets (liabilities) |  | $ | 391 |  | $ | 69 |
Non-current deferred tax assets (liabilities): |  |  |  |  |  |  |
Net operating loss carryforwards |  | $ | 52,843 |  | $ | 51,005 |
Stock-based compensation |  |  | 2,154 |  |  | 1,763 |
Business, foreign and AMT credit carryforwards |  |  | 1,665 |  |  | 1,730 |
Capitalized R&D |  |  | 249 |  |  | 134 |
Contributions |  |  | 10 |  |  | 17 |
Pensions |  |  | 625 |  |  | 583 |
Depreciation and amortization |  |  | 1,060 |  |  | 695 |
Foreign tax withholding |  |  | (881) |  |  | (1,627) |
Foreign earnings not permanently reinvested |  |  | (2,468) |  |  | (3,209) |
Other |  |  | 18 |  |  | 13 |
Valuation allowance |  |  | (55,442) |  |  | (52,275) |
Total non-current deferred tax liabilities |  | $ | (167) |  | $ | (1,171) |
Summary of Income Tax Examinations [Table Text Block] | The following tax years remain subject to examination:
Significant Jurisdictions |  | Open Years |
U.S. Federal |  | 2013 – 2015 |
California |  | 2012 – 2015 |
Switzerland |  | 2015 |
Japan |  | 2013 – 2015 |
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block] | Loss from continuing operations before provision (benefit) for income taxes is as follows (in thousands):
|  | 2016 |  | 2015 |  | 2014 |
Domestic |  | $ | (10,399) |  | $ | (7,678) |  | $ | (8,113) |
Foreign |  |  | (2,045) |  |  | 2,073 |  |  | (532) |
|  | $ | (12,444) |  | $ | (5,605) |  | $ | (8,645) |

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- Definition Tabular disclosure of income tax examinations that an enterprise is currently subject to or that have been completed in the current period typically including a description of the examination, the jurisdiction conducting the examination, the tax year(s) under examination, the likelihood of an unfavorable settlement, the range of possible losses, the liability recorded, the increase or decrease in the liability from the prior period, and any penalties and interest that have been recorded. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32718-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 55 -Paragraph 217 -URI http://asc.fasb.org/extlink&oid=75116239&loc=d3e36027-109320 + Details
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