NOTES PAYABLE AND LONG-TERM DEBT - Narrative (Details)	Jun. 29, 2018 USD ($)	Jun. 30, 2018 USD ($)
Line of Credit Facility [Line Items]
Borrowings outstanding		$ 2,002,000
Term loan
Line of Credit Facility [Line Items]
Borrowings outstanding		$ 1,982,000
Term at time of borrowing	5 years
Interest rate		4.63%
Credit agreement
Line of Credit Facility [Line Items]
Extension of maturity date	2 years
Maximum borrowing capacity	$ 14,000,000.0
Percentage of eligible accounts receivable considered for borrowing base	80.00%
Percentage of eligible inventory considered for borrowing base	50.00%
Amount of covenant for borrowing base	$ 3,000,000
Basis spread of variable rate	0.00%
Unused capacity, commitment fee percentage	0.25%
Remaining borrowing capacity		$ 12,000,000
Credit agreement | Maximum
Line of Credit Facility [Line Items]
Debt cash flow leverage ratio	3.0
Credit agreement | Minimum
Line of Credit Facility [Line Items]
Debt service coverage ratio	1.15
Credit agreement | LIBOR
Line of Credit Facility [Line Items]
Basis spread of variable rate	2.50%
Credit agreement | LIBOR | Maximum
Line of Credit Facility [Line Items]
Basis spread of variable rate	3.00%
Credit agreement | Working Capital
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 6,000,000.0
Remaining borrowing capacity		6,000,000
Credit agreement | Letter of Credit
Line of Credit Facility [Line Items]
Maximum borrowing capacity	2,000,000.0
Amount outstanding		40,000
Credit agreement | Acquisitions
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 8,000,000.0
Percentage of portion allocated to acquisition purchase price	75.00%
Remaining borrowing capacity		$ 6,000,000