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Computation of Net Loss Per Basic and Diluted (Detail) (USD $)
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3 Months Ended |
9 Months Ended |
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Sep. 29, 2012
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Sep. 24, 2011
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Sep. 29, 2012
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Sep. 24, 2011
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| Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Line Items] |
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| Common shares |
$ (2,163,455) |
$ (2,830,663) |
$ (3,317,568) |
$ (4,298,321) |
| Convertible preferred Series B-F |
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| Net loss |
$ (2,163,455) |
$ (2,830,663) |
$ (3,317,568) |
$ (4,298,321) |
| Net loss per share |
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| Basic and diluted |
$ (0.09) |
$ (0.12) |
$ (0.14) |
$ (0.18) |
| Weighted-average shares outstanding: |
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| Common shares - basic |
24,418,284 |
24,408,594 |
24,414,432 |
24,378,188 |
| Common share equivalents of Series B-F convertible preferred stock |
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| If - converted weighted-average shares outstanding |
24,418,284 |
24,408,594 |
24,414,432 |
24,378,188 |
| Diluted weighted-average shares outstanding |
24,418,284 |
24,408,594 |
24,414,432 |
24,378,188 |
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Stock Option
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| Weighted-average shares outstanding: |
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| Common share equivalents of "in the money" |
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Warrant
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| Weighted-average shares outstanding: |
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| Common share equivalents of "in the money" |
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