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EARNINGS PER SHARE (EPS) - Computation (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Mar. 31, 2023
Jul. 01, 2022
Apr. 01, 2022
Jun. 30, 2023
Jul. 01, 2022
Net income (loss)            
Net Income (Loss) $ 397 $ 932 $ (4,326) $ (3,773) $ 1,329 $ (8,099)
Net income (loss) - basic 397   (4,326)   1,329 (8,099)
Net income (loss) - diluted $ 397   $ (4,326)   $ 1,329 $ (8,099)
Weighted-average shares outstanding:            
Weighted-average common shares outstanding (in shares) 13,344   13,016   13,305 12,901
Effect of dilutive stock options and restricted stock awards (in shares) 143       176  
Weighted-average common shares outstanding-diluted (in shares) 13,487   13,016   13,481 12,901
Earnings (Loss) per share:            
Basic (in dollars per share) $ 0.03   $ (0.33)   $ 0.10 $ (0.63)
Diluted (in dollars per share) $ 0.03   $ (0.33)   $ 0.10 $ (0.63)