REVENUE RECOGNITION - Estimated Revenues Expected And Change In Contract Liabilities Default (Details) $ in Thousands	3 Months Ended
	Mar. 29, 2020 USD ($)
Estimated future revenues expected to be recognized for performance obligations
Revenue expected to be recognized	$ 968
Change in contract liabilities
Beginning balance	1,318
Revenue recognized	(350)
Ending balance	968
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-03-30
Estimated future revenues expected to be recognized for performance obligations
Revenue expected to be recognized	$ 83
Revenue, remaining performance obligation, expected timing of satisfaction, period	9 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-04
Estimated future revenues expected to be recognized for performance obligations
Revenue expected to be recognized	$ 109
Revenue, remaining performance obligation, expected timing of satisfaction, period	12 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-03
Estimated future revenues expected to be recognized for performance obligations
Revenue expected to be recognized	$ 107
Revenue, remaining performance obligation, expected timing of satisfaction, period	12 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-02
Estimated future revenues expected to be recognized for performance obligations
Revenue expected to be recognized	$ 102
Revenue, remaining performance obligation, expected timing of satisfaction, period	12 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Estimated future revenues expected to be recognized for performance obligations
Revenue expected to be recognized	$ 93
Revenue, remaining performance obligation, expected timing of satisfaction, period	12 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-12-30
Estimated future revenues expected to be recognized for performance obligations
Revenue expected to be recognized	$ 474
Revenue, remaining performance obligation, expected timing of satisfaction, period