REVOLVING BANK LOAN (Details)	12 Months Ended
	Dec. 28, 2019 USD ($)	Dec. 29, 2018 USD ($)
Debt Instrument [Line Items]
Period over which existing cash balance, anticipated cash flow from operations and borrowings available under the credit agreement will be sufficient to cover expected cash needs	12 months
Minimum | Period Ending June 28, 2014 [Member]
Debt Instrument [Line Items]
Fixed charge coverage ratio	1.06
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Maximum revolving credit facility line	$ 20,000,000
Minimum EBITDA threshold amount in next three months	(525,000)
Minimum EBITDA threshold amount in next six months	265,000
Threshold average daily excess availability	5,000,000
Outstanding amount	800,000	$ 2,200,000
Highest balance outstanding during the period	3,700,000	9,800,000
Average outstanding	313,000	$ 6,058,000
Outstanding amount of letters of credit total	5,620,000
Revolving Credit Facility [Member] | Minimum
Debt Instrument [Line Items]
Maximum inventory borrowings	$ 8,500,000
Revolving Credit Facility [Member] | Maximum
Debt Instrument [Line Items]
Borrowings as a percentage of eligible accounts receivable	85.00%
Borrowings as a percentage of eligible inventories	60.00%
Revolving Credit Facility [Member] | LIBOR
Debt Instrument [Line Items]
Variable interest rate base	LIBOR
Percentage points added to the reference rate	2.00%
Revolving Credit Facility [Member] | Prime Rate
Debt Instrument [Line Items]
Variable interest rate base	prime rate