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Summary of Significant Accounting Policies (Details Textual) (USD $) | 12 Months Ended
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Dec. 28, 2013 Customer | Dec. 29, 2012 Customer | Dec. 31, 2011 Customer
Summary of Significant Accounting Policies (Textual) [Abstract] |  |  |
Provision of sales returns | $ 33,000 | $ 53,000 |
Gross value of demos | 1,600,000 |  |
Gross value of loaners |  | 1,400,000 |
Accumulated amortization on inventory demos | 601,000 |  |
Accumulated amortization on inventory loaners |  | 603,000 |
Estimated useful life of demos and loaners | 4 years |  |
Estimated useful lives of the assets | 3 years |  |
Shipping and handling costs | 300,000 | 300,000 | 300,000
Advertising and promotion costs | 100,000 | 200,000 | 300,000
No of customer accounted for greater than 10% of total sales | 0 | 0 | 0
No. of customer accounted for more than 10% of net accounts receivable | 0 | 0 |
Customer accounted percentage of total sales | 10.00% | 10.00% | 10.00%
Customer accounted percentage of net accounts receivable balance | 10.00% | 10.00% |
Restricted cash |  | $ 510,000 |
Percentage of purchase price to be deposited in escrow account |  | 10.00% |

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