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Schedule of Contract With Customer, Asset And Liability (Details) - USD ($) | Dec. 26, 2020 | Dec. 28, 2019
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Contract Assets And Liabilities |  |
Contract assets and unbilled receivables | $ 3,521,753 | $ 921,082
Change in contract assets and unbilled receivables | $ 2,600,671 |
Percentage of change in contract assets-current | 282.00% |
Contract liabilities and billings in excess of revenue earned | $ (1,493,847) | (796,794)
Change Contract liabilities and billings in excess of revenue earned | $ (696,053) |
Percentage Contract liabilities and billings in excess of revenue earned | 87.00% |
Contract liabilities-noncurrent | $ (5,069) | (6,557)
Change in contract liabilities-noncurrent | $ 1,488 |
Percentage of change in contract liabilities-noncurrent | (23.00%) |
Net contract assets | $ 2,022,837 | $ 117,731
Change in Net contract assets | $ 1,905,106 |
Percentage of change in Net contract assets | 1618.00% |

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