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Liabilities (Tables) | 12 Months Ended
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Dec. 28, 2012
Liabilities, Fair Value Disclosure [Abstract] |
Schedule Of Share Based Payment Award Stock Warrants Valuation Assumptions [Table Text Block] | The fair value of the warrants was estimated on December 14, 2007 and on June 1, 2009 issuance dates using a Black-Scholes option valuation model applying the assumptions noted in the following table:
|  | As of December 12, 2007 |  |  | As of June 1, 2009 |
Common stock price per share |  | $ | 2.63 |  |  | $ | 1.01 |
Number of warrants |  |  | 700,000 |  |  |  | 700,000 |
Expected dividends |  |  | 0 | % |  |  | 0 | %
Expected volatility |  |  | 67.3 | % |  |  | 74.4 | %
Risk-free rate |  |  | 3.88 | % |  |  | 3.28 | %
Life (in years) |  |  | 6.0 |  |  |  | 6.0 |
The fair value of the warrant that was classified as a liability on December 28, 2012 and December 30, 2011 were based on Black-Scholes option valuation model applying the assumption noted on the following table below:
|  | December 28, 2012 |  |  | December 30, 2011 |
Common stock price per share |  | $ | 5.82 |  |  | $ | 10.49 |
Number of warrants |  |  | 70,000 |  |  |  | 70,000 |
Expected dividends |  |  | 0 | % |  |  | 0 | %
Expected volatility |  |  | 42.15 | % |  |  | 63.61 | %
Risk-free rate |  |  | .01 | % |  |  | .25 | %
Life (in years) |  |  | .23 |  |  |  | 1.25
Schedule of Change in Asset Retirement Obligation [Table Text Block] | The following table describes all changes to the Company’s asset retirement obligation liability (in thousands):
|  | December 28, |  |  | December 30, |
|  | 2012 |  |  | 2011 |
Asset retirement obligation at beginning of the year |  | $ | 523 |  |  |  | — |
Liabilities incurred |  |  | 169 |  |  | $ | 577 |
Accretion expense |  |  | 15 |  |  |  | — |
Asset retirement obligation at end of the year |  | $ | 707 |  |  | $ | 577

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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock Warrants, including, but not limited to: (a) expected term of share warrants and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References No definition available. + Details
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- Definition Tabular disclosure of the changes in carrying amount of a liability for asset retirement obligations, for changes such as new obligations, changes in estimates of existing obligations, spending on existing obligations, property dispositions, and foreign currency translation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13201-110859 + Details
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