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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 (Textual) [Abstract] |  |  |  |
Excess benefits due to stock option exercise | $ 900,000 |  |  |
State research and experimental tax credit carryforward | 3,700,000 |  |  |
Change in amount of operating loss carryforwards valuation allowance | 2,100,000 | 1,100,000 |  |
Undistributed earnings from non-U.S. operations | 1,400,000 |  |  |
Maximum amount company recognize from unrecognized tax benefit | 3,464,000 | 3,599,000 | 3,370,000 | 1,032,000
Unrecognized tax benefits that would impact effective tax rate if recognized | 2,900,000 |  |  |
Subsequent Event [Member] |  |  |  |
Income Taxes (Textual) [Abstract] |  |  |  |
Research tax credit | 500,000 |  |  |
Additional Paid-in Capital [Member] |  |  |  |
Income Taxes (Textual) [Abstract] |  |  |  |
State research and experimental tax credit carryforward | 200,000 |  |  |
California Tax Authority |  |  |  |
Income Taxes (Textual) [Abstract] |  |  |  |
Operating loss carryforwards | 27,300,000 |  |  |
California Tax Authority | Additional Paid-in Capital [Member] |  |  |  |
Income Taxes (Textual) [Abstract] |  |  |  |
Operating loss carryforwards | 1,800,000 |  |  |
Foreign Tax Authority |  |  |  |
Income Taxes (Textual) [Abstract] |  |  |  |
Operating loss carryforwards | 37,200,000 |  |  |
Foreign Tax Authority | Additional Paid-in Capital [Member] |  |  |  |
Income Taxes (Textual) [Abstract] |  |  |  |
Operating loss carryforwards | $ 1,700,000 |  |  |

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- Definition Operating Loss Carryforwards, Valuation Allowance, Increase (Decrease) in Amount + References No definition available. + Details
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- Definition Disclosure of the aggregate tax benefit realized from the exercise of stock options and the conversion of similar instruments during the annual period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph i -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 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 Amount of undistributed earnings of foreign subsidiaries intended to be permanently reinvested outside the United States that are not subject to U.S. federal income taxes. + References No definition available. + 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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