NOTES PAYABLE AND LONG-TERM DEBT - Narrative (Details) - USD ($)				3 Months Ended
	Jan. 21, 2021	Aug. 21, 2019	Jun. 29, 2018	Sep. 30, 2021	Jan. 22, 2021	Dec. 28, 2020
Letter of Credit
Line of Credit Facility [Line Items]
Amount outstanding				$ 700,000
Credit Agreement
Line of Credit Facility [Line Items]
Maximum borrowing capacity			$ 14,000,000
Percentage of eligible accounts receivable considered for borrowing base			80.00%
Percentage of eligible inventory considered for borrowing base			50.00%
Borrowing base, monetary benchmark			$ 3,000,000
Basis spread of variable rate			50.00%
Interest rate				3.00%
Unused capacity, commitment fee percentage				0.25%
Remaining borrowing capacity				$ 13,300,000
Maximum borrowing capacity, option				17,300,000
Credit Agreement | Working Capital
Line of Credit Facility [Line Items]
Maximum borrowing capacity			$ 6,000,000
Remaining borrowing capacity				5,300,000
Credit Agreement | Business Acquisitions
Line of Credit Facility [Line Items]
Maximum borrowing capacity			$ 8,000,000
Percentage of portion allocated to acquisition purchase price			75.00%
Remaining borrowing capacity				$ 8,000,000
Credit Agreement | Additional Working Capital
Line of Credit Facility [Line Items]
Maximum borrowing capacity			$ 4,000,000
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 | Term Loan
Line of Credit Facility [Line Items]
Maturity period			5 years
Credit Agreement | Letter of Credit
Line of Credit Facility [Line Items]
Maximum borrowing capacity			$ 2,000,000
Credit Agreement | LIBOR
Line of Credit Facility [Line Items]
Basis spread of variable rate			2.50%
Debt instrument, term of variable rate			1 month
Credit Agreement | LIBOR | Maximum
Line of Credit Facility [Line Items]
Basis spread of variable rate			3.00%
Credit Agreement Amendment
Line of Credit Facility [Line Items]
Maximum borrowing capacity						$ 18,000,000
Loan Agreement
Line of Credit Facility [Line Items]
Maximum borrowing capacity		$ 3,200,000
Interest rate				2.71%
Interest rate at expiration of advancing period				4.15%
Loan Agreement | Real Estate
Line of Credit Facility [Line Items]
Remaining borrowing capacity		2,000,000
Loan Agreement | Equipment
Line of Credit Facility [Line Items]
Remaining borrowing capacity		$ 1,200,000
Loan Agreement | Term Loan
Line of Credit Facility [Line Items]
Maturity period		5 years
Loan Agreement | LIBOR
Line of Credit Facility [Line Items]
Basis spread of variable rate			2.50%
Debt instrument, term of variable rate			1 month
Real Estate Loan Agreement
Line of Credit Facility [Line Items]
Maximum borrowing capacity					$ 900,000
Maturity period	5 years
Amortization period	20 years
Interest rate					4.00%