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Significant Accounting Policies: (Details) (USD $) | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 28, 2013 item | Dec. 29, 2012 | Dec. 31, 2011 | Dec. 25, 2010
Receivables |  |  |  |
Allowance for doubtful accounts | $ 4,300 | $ 17,300 | $ 15,100 | $ 17,400
Leasing Income Recognition |  |  |  |
Threshold delinquent period of lease rentals to classify lease as non-accrual | 90 days |  |  |
Minimum monthly payments owed to classify lease as non-accrual | 3 |  |  |
Allowance for Credit Losses |  |  |  |
Delinquent period for charging-off against allowance for credit losses | 121 days |  |  |
Canada |  |  |  |
Cash equivalents |  |  |  |
Cash located in banks | $ 55,700 | $ 107,400 |  |

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