STOCK-BASED COMPENSATION - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 27, 2023	Dec. 28, 2022	Dec. 29, 2021	Jun. 08, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested, Number of Shares	380,896
Authorized number of common stock for issuance (shares)	5,652,240
Number of share available for grant (shares)	610,098
Stock-based compensation expense	$ 3,000	$ 3,500	$ 3,200
Common stock, options outstanding (shares)	843,320	1,068,179	978,078
Common stock, options unvested (shares)	462,424
Option vesting period		4 years
Options expiration period	10 years	10 years
Intrinsic value of options exercised	$ 900	$ 800	$ 1,600
Weighted average grant date fair value (usd per share)	$ 4.41	$ 4.89
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	562,344	372,958
Granted (shares)	454,081	356,610
Unrecognized compensation expense	$ 1,800
Unrecognized compensation expense, recognition period	2 years 10 months 24 days
Stock-based compensation expense	$ 2,964	$ 3,491	$ 3,220
Omnibus Equity Incentive Plan 2018 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Authorized number of common stock for issuance (shares)				2,000,000
Exercise price equal to the fair market value of the common stock on the date of grant
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option vesting period	4 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	562,344
Premium Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, options outstanding (shares)	0
Restricted Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (shares)	454,081	356,610
Unrecognized compensation expense	$ 3,500
Unrecognized compensation expense, recognition period	2 years 5 months 23 days
Restricted Shares | Nonemployee Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option vesting period	1 year
Restricted Shares | Employee
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option vesting period	4 years
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense	$ 300
Unrecognized compensation expense, recognition period	10 months 13 days