STOCK-BASED COMPENSATION (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 29, 2019	Dec. 30, 2018
Stock-based compensation
Shares available for grant	237,333
Unrecognized stock-based compensation cost	$ 408
Unrecognized stock-based compensation costs, expected period of recognition	3 years
Stock-based compensation expense	$ 463	$ 278
Stock Options
Stock-based compensation
Stock-based compensation expense	266	208
Performance Shares
Stock-based compensation
Stock-based compensation expense		$ 70
Restricted Stock
Stock-based compensation
Stock-based compensation expense	$ 198
Employees and Directors \| Stock Options
Stock-based compensation
Expiration period	10 years
Employees and Directors \| Minimum \| Stock Options
Stock-based compensation
Vesting period	2 years
Employees and Directors \| Maximum \| Stock Options
Stock-based compensation
Vesting period	5 years
Non-employee \| Stock Options
Stock-based compensation
Vesting period	2 years
Expiration period	10 years

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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