EARNINGS PER SHARE (EPS) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended
	Jul. 03, 2020	Apr. 03, 2020	Jun. 28, 2019	Mar. 29, 2019	Jul. 03, 2020	Jun. 28, 2019
Earnings (Loss) per share:
Net income (loss)	$ (4,985)	$ (8,154)	$ 1,640	$ (417)	$ (13,139)	$ 1,223
Weighted-average common shares outstanding (in shares)	11,682,000		11,100,000		11,593,000	11,037,000
Effect of dilutive stock options and restricted stock awards (in shares)			579,000			633,000
Weighted-average common shares outstanding-diluted (in shares)	11,682,000		11,679,000		11,593,000	11,670,000
Earnings (Loss) per share:
Basic	$ (0.43)		$ 0.15		$ (1.13)	$ 0.11
Diluted	$ (0.43)		$ 0.14		$ (1.13)	$ 0.10
Stock options
Anti-dilutive securities excluded from the computation of earnings per share
Number of awards excluded from calculation of dilutive potential common shares (in shares)			156,000			225,000