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Shareholders' Equity (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 12 Months Ended |  | 12 Months Ended |  |  |  |  | 0 Months Ended |
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Dec. 28, 2013 | Dec. 29, 2012 | Dec. 28, 2013 Common Stock [Member] | Dec. 29, 2012 Common Stock [Member] | Dec. 28, 2013 2011 Plan | Dec. 28, 2013 Stock options | Dec. 29, 2012 Stock options | Jan. 01, 2011 Stock options | Dec. 28, 2013 Stock options Common Stock [Member] | Dec. 29, 2012 Stock options Common Stock [Member] | Dec. 28, 2013 Stock options 2011 Plan | May 09, 2013 Stock options 2011 Plan Employees | Jul. 22, 2013 Stock options 2011 Plan Management [Member] | May 09, 2013 Stock options 2011 Plan Non-employee directors | Aug. 02, 2012 Stock options 2011 Plan Non-employee directors | May 10, 2012 Stock options 2011 Plan Non-employee directors | Dec. 28, 2013 Stock options 2006 Plan | Dec. 28, 2013 Stock options 1997 Plan
Shareholders' Equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Document Fiscal Year Focus | 2013 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of Common Stock (in Shares) |  |  | 15,000 | 29,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of Common Stock | $ 36 | $ 86 | $ 36 | $ 86 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value | $ 164 |  |  |  |  |  |  |  | $ 7 | $ 71 |  |  |  |  |  |  |  |
Maximum number of shares of common stock which can be issued |  |  |  |  | 700,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period |  |  |  |  |  |  |  |  |  |  |  | 2 years | 3 years | 6 months | 6 months | 6 months |  |
Options Outstanding |  |  |  |  |  | 766,000 | 533,000 | 588,000 |  |  | 367,000 |  |  |  |  |  | 391,000 | 8,000
Granted (in shares) |  |  |  |  |  | 315,000 | 38,000 |  |  |  |  | 185,000 | 100,000 | 30,000 | 8,000 | 30,000 |  |
Granted, exercise price |  |  |  |  |  | $ 2.13 | $ 4.04 |  |  |  |  | $ 1.89 | $ 2.65 | $ 1.89 | $ 4.01 | $ 4.05 |  |
Weighted average grant date fair value (in dollars per share) |  |  |  |  |  | $ 1.68 | $ 3.56 |  |  |  |  | $ 1.47 | $ 2.06 | $ 1.66 | $ 3.52 | $ 3.57 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Number of Options that Will Vest Equally |  |  |  |  |  |  |  |  |  |  |  | 135,000 | 50,000 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Number of Options that Will Vest Based on Achievements of Performance |  |  |  |  |  |  |  |  |  |  |  | 50,000 | 50,000 |  |  |  |  |
Assumptions used to estimate the fair value of stock options granted |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected dividend yield (as a percent) | 0.00% |  |  |  |  | 0.00% | 0.00% |  |  |  |  |  |  |  |  |  |  |
Expected stock price volatility (as a percent) |  |  |  |  |  | 90.50% | 95.46% |  |  |  |  |  |  |  |  |  |  |
Risk-free interest rate (as a percent) |  |  |  |  |  | 1.47% | 1.80% |  |  |  |  |  |  |  |  |  |  |
Expected life of options (in years) |  |  |  |  |  | 7 years 3 months 15 days | 10 years |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Options Outstanding Balance |  |  |  |  |  | 533,000 |  | 588,000 |  |  | 367,000 |  |  |  |  |  | 391,000 | 8,000
Granted (in shares) |  |  |  |  |  | 315,000 | 38,000 |  |  |  |  | 185,000 | 100,000 | 30,000 | 8,000 | 30,000 |  |
Exercised |  |  |  |  |  | (15,000) | (29,000) |  |  |  |  |  |  |  |  |  |  |
Cancelled/expired |  |  |  |  |  | (67,000) | (59,000) |  |  |  |  |  |  |  |  |  |  |
Forfeiture |  |  |  |  |  |  | (5,000) |  |  |  |  |  |  |  |  |  |  |
Options Outstanding Balance |  |  |  |  |  | 766,000 | 533,000 | 588,000 |  |  | 367,000 |  |  |  |  |  | 391,000 | 8,000
Weighted average exercise Price, balance |  |  |  |  |  | $ 3.88 |  | $ 3.99 |  |  |  |  |  |  |  |  |  |
Granted, exercise price |  |  |  |  |  | $ 2.13 | $ 4.04 |  |  |  |  | $ 1.89 | $ 2.65 | $ 1.89 | $ 4.01 | $ 4.05 |  |
Exercisesd, exercise Price |  |  |  |  |  | $ 2.38 | $ 3.03 |  |  |  |  |  |  |  |  |  |  |
Expired, exercise price |  |  |  |  |  | $ 3.11 | $ 5.25 |  |  |  |  |  |  |  |  |  |  |
Forfeiture, exercise price |  |  |  |  |  |  | $ 4.25 |  |  |  |  |  |  |  |  |  |  |
Weighted Average Exercise Price, balance |  |  |  |  |  | $ 3.26 | $ 3.88 | $ 3.99 |  |  |  |  |  |  |  |  |  |

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- Definition Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + 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 (a)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. + 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 (f)(2)(iii) -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 e(2)(c) -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 Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.D.2) -URI http://asc.fasb.org/extlink&oid=6793087&loc=d3e301413-122809 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section D -Subsection 2 + Details
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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the 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 (f)(2)(ii) -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 e(2)(b) -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 risk-free interest rate assumption that is used in valuing an option on its own shares. + 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 (f)(2)(iv) -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 e(2)(d) -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 maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -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 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements. + 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 (c)(1)(iv)(4) -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 b(1)(g) -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 number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan. + 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 (c)(1)(iv)(3) -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 b(1)(f) -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 Gross number of share options (or share units) granted during the period. + References No definition available. + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph c(1) -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 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(1)(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 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(1)(b) -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 Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. + 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 (c)(1)(i) -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 b(1)(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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