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ACQUISITIONS (Pro Forma Information) (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
--- | ---
Dec. 26, 2021 | Dec. 27, 2020 | Dec. 29, 2019
Earnings Per Share, Pro Forma [Abstract] |  |  |
Effective tax rate for pro forma adjustments | 20.10% | 26.40% | 24.50%
Pro Forma |  |  |
Earnings Per Share, Pro Forma [Abstract] |  |  |
Effective tax rate for pro forma adjustments | 2010.00% | 2630.00% |
Momentum Solutionz |  |  |
Business Acquisition [Line Items] |  |  |
Revenue | $ 239,263 | $ 212,934 |
Gross profit | 81,106 | 68,580 |
Net income | $ 10,500 | $ (1,884) |
Earnings Per Share, Pro Forma [Abstract] |  |  |
Net income per share, basic | $ 1.01 | $ (0.18) |
Net income per share, diluted | $ 1.01 | $ (0.18) |

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