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Income Taxes (Details Textual) (USD $) | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 29, 2012 | Dec. 31, 2011 | Jan. 01, 2011 | Jan. 02, 2010
Income Taxes (Additional Textual) [Abstract] |  |  |  |
Payment of interest related to unrecognized tax benefits | $ 67,000 |  |  |
Tax loss mainly from the disposal of discontinued operations and anticipates the ability to claim a tax refund | 600,000 |  |  |
Company recognized tax benefit | 300,000 |  |  |
Tax credit carryforward expiration year | 2026 |  |  |
Ending balance of unrecognized tax benefits | 954,000 | 1,191,000 | 865,000 | 637,000
Unrecognized tax benefits recognition impact on income tax rate | 0 |  |  |
Change in unrecognized tax benefits | 954,000 |  |  |
Federal [Member] |  |  |  |
Income Taxes (Textual) [Abstract] |  |  |  |
Net operating loss | 13,900,000 |  |  |
Research Credits | 1,000,000 |  |  |
Net operating loss expiration year | 2022 |  |  |
State [Member] |  |  |  |
Income Taxes (Textual) [Abstract] |  |  |  |
Net operating loss | 11,700,000 |  |  |
Stock option deduction | 1,300,000 |  |  |
Research Credits | $ 1,500,000 |  |  |
Net operating loss expiration year | 2020 |  |  |

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- Definition Unrecognized tax benefits in which no material changes anticipated. + References No definition available. + Details
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- Definition The sum of domestic, foreign and state and local operating loss carryforwards, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 48 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 17 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Carryforwards -URI http://asc.fasb.org/extlink&oid=6506874 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 48 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The gross amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Unrecognized Tax Benefit -URI http://asc.fasb.org/extlink&oid=6527854 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 21 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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