REVOLVING BANK LOAN AND LONG-TERM DEBT (Details)		3 Months Ended		12 Months Ended
	Mar. 24, 2016 USD ($)	Apr. 02, 2016 USD ($)	Apr. 04, 2015 USD ($)	Jan. 03, 2015 USD ($)	Jan. 02, 2016 USD ($)
REVOLVING BANK LOAN AND LONG-TERM DEBT
Minimum tangible net worth threshold, percentage of the consolidated net income	50.00%
Maximum balance sheet leverage ratio	1.00
Maximum debt instruments charges				$ 5,757,000
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
Period Ending July 04, 2015
REVOLVING BANK LOAN AND LONG-TERM DEBT
Minimum tangible net worth threshold, base amount	$ 31,000,000
Minimum | Period Ending June 28, 2014
REVOLVING BANK LOAN AND LONG-TERM DEBT
Fixed charge coverage ratio	1.15
Revolving Credit Facility
REVOLVING BANK LOAN AND LONG-TERM DEBT
Maximum revolving credit facility line	$ 20,000,000
Borrowings as a percentage of capital expenditures	80.00%
Annual capital expenditures for fiscal year 2016, maximum	$ 5,500,000
Annual capital expenditures for fiscal year 2017, maximum	$ 5,500,000
Outstanding amount		$ 5,500,000			$ 6,200,000
Highest balance outstanding during the period		6,500,000	$ 6,000,000
Average outstanding		4,830,000	$ 4,543,000
Outstanding amount of letters of credit total		$ 5,415,000
Revolving Credit Facility | Minimum
REVOLVING BANK LOAN AND LONG-TERM DEBT
Borrowings as a percentage of eligible accounts receivable	80.00%
Borrowings as a percentage of eligible inventories	50.00%
Maximum inventory borrowings	$ 8,500,000
Revolving Credit Facility | LIBOR
REVOLVING BANK LOAN AND LONG-TERM DEBT
Variable interest rate base	LIBOR
Percentage points added to the reference rate	2.50%
Revolving Credit Facility | Prime Rate
REVOLVING BANK LOAN AND LONG-TERM DEBT
Variable interest rate base	prime rate
Percentage points added to the reference rate	0.25%