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FAIR VALUE MEASUREMENTS (Schedule of Fair Value) (Details) | 12 Months Ended
--- | ---
Dec. 26, 2021 USD ($) | Dec. 27, 2020 USD ($) | Dec. 29, 2019 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Other assets | $ 1,283,629 | $ 1,195,143 |
Interest rate swap | (3,565,218) | (7,355,541) |
Contingent consideration, net | 2,063,509 |  |
Interest expense on contingent consideration payable | 251,705 | 189,650 | $ 123,761
Change in level 3 fair value measurement attributable to acquisition | 1,900,000 |  |
Other long-term assets | Fair Value, Measurements, Recurring | Level 2 |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Other assets | 58,331 |  |
Other long-term liabilities | Fair Value, Measurements, Recurring | Level 2 |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Interest rate swap |  | 122,874 |
Contingent consideration, net - current and long-term | Fair Value, Measurements, Recurring | Level 3 |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Contingent consideration, net | $ 2,063,509 | $ 2,287,926 |
Discount Rate |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Discount rate (as a percent) | 0.09 |  |

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