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Organization and Description of Business and Accounting Policies (Tables) | 12 Months Ended
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Dec. 29, 2017
Accounting Policies [Abstract] |
Schedule of Useful Life of Property Plant and Equipment [Table Text Block] | The estimated useful lives of assets are as follows:
Machinery and equipment |  |  | 5-10 years |
Furniture and equipment |  |  | 3-7 years |
Computers, software, and peripherals |  |  | 2-5 years |
Leasehold improvements |  |  | (a) |
| (a) | The estimated useful life of leasehold improvements is the shorter of the useful life of the asset or the term of the associated leases.
Comprehensive Income (Loss) [Table Text Block] | The following table summarizes the changes in the accumulated balances for each component of accumulated other comprehensive income (loss) attributable to the Company for the years ended December 29, 2017, December 30, 2016 and January 1, 2016 (in thousands):
|  |  |  | Defined |  | Defined |  | Accumulated |
|  | Foreign |  | Benefit |  | Benefit |  | Other |
|  | Currency |  | Pension Plan- |  | Pension Plan- |  | Comprehensive |
|  | Translation |  | Japan |  | Switzerland |  | Income (Loss) |
Balance at January 2, 2015 |  | $ | (176) |  | $ | 121 |  | $ | (1,015) |  | $ | (1,070) |
Other comprehensive income (loss) |  |  | 52 |  |  | (38) |  |  | (576) |  |  | (562) |
Tax effect |  |  | (21) |  |  | 12 |  |  | 61 |  |  | 52 |
Balance at January 1, 2016 |  |  | (145) |  |  | 95 |  |  | (1,530) |  |  | (1,580) |
Other comprehensive income (loss) |  |  | 224 |  |  | (9) |  |  | 426 |  |  | 641 |
Tax effect |  |  | (68) |  |  | 2 |  |  | (45) |  |  | (111) |
Balance at December 30, 2016 |  |  | 11 |  |  | 88 |  |  | (1,149) |  |  | (1,050) |
Other comprehensive income (loss) |  |  | 387 |  |  | (6) |  |  | (406) |  |  | (25) |
Tax effect |  |  | (120) |  |  | 6 |  |  | 39 |  |  | (75) |
Balance at December 29, 2017 |  | $ | 278 |  | $ | 88 |  | $ | (1,516) |  | $ | (1,150) |
Schedule Of Cash And Cash Equivalents and Restricted Cash Equivalents [Table Text Block] | The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the Consolidated Balance Sheets that sum to the total of the same such amounts shown in the Consolidated Statements of Cash Flows (in 000’s):
|  | 2017 |  | 2016 |  | 2015 |  | 2014 |
Cash and cash equivalents |  | $ | 18,520 |  | $ | 13,999 |  | $ | 13,402 |  | $ | 13,013 |
Restricted cash included in other long-term assets |  |  | 121 |  |  | 119 |  |  | 119 |  |  | 119 |
Total cash, cash equivalents and restricted cash as shown in the Consolidated Statements of Cash Flows |  | $ | 18,641 |  | $ | 14,118 |  | $ | 13,521 |  | $ | 13,132 |

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- Definition Tabular disclosure of components of comprehensive income (loss). Includes, but is not limited to, foreign currency translation adjustments, foreign currency transactions designated as economic hedges of a net investment in foreign entity, gain (loss) and prior service cost (credit) for pension plans and other postretirement benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e526-108580 + Details
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