RECENTLY ISSUED ACCOUNTING PRONOUNCEMENTS - (Details) - USD ($)	Mar. 28, 2020	Dec. 28, 2019	Dec. 30, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating right-of-use assets	$ 4,695,000	$ 4,978,000
Liabilities related to operating leases	$ 4,877,000
ASU 2016-02 | Restatement Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating right-of-use assets			$ 5,353,000
Liabilities related to operating leases			$ 5,427,000