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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Changes in the Allowance for Doubtful Accounts) (Details) - USD ($)
12 Months Ended
Dec. 29, 2019
Dec. 30, 2018
Dec. 31, 2017
Accounts Receivable, Allowance for Credit Loss [Roll Forward]      
Allowance at the beginning of the period $ 468,233 $ 473,573  
Provision for doubtful accounts 128,260 40,618 $ 760,633
Accounts written off (128,260) (45,958)  
Allowance at the end of the period $ 468,233 $ 468,233 $ 473,573