MARKET SECTORS AND MAJOR CUSTOMERS - Narrative (Details) - customer	3 Months Ended		9 Months Ended
	Jun. 28, 2019	Jun. 29, 2018	Jun. 28, 2019	Jun. 29, 2018
Concentration Risk [Line Items]
Concentration risk, number of customers	1	2	1	2
Customer Concentration Risk [Member] | Accounts Receivable [Member]
Concentration Risk [Line Items]
Concentration risk, number of customers			1	3
Concentration risk, percentage			26.00%	55.00%
Customer Number Two [Member] | Customer Concentration Risk [Member] | Sales [Member] | Aerospace and Defense [Member]
Concentration Risk [Line Items]
Concentration risk, number of customers				1
Customer Number Two [Member] | Customer Concentration Risk [Member] | Sales [Member] | Medical
Concentration Risk [Line Items]
Concentration risk, number of customers		1
Concentration risk, percentage		11.00%
Customer Number Three [Domain] | Customer Concentration Risk [Member] | Sales [Member] | Medical
Concentration Risk [Line Items]
Concentration risk, number of customers				1
Concentration risk, percentage				11.00%
Customer Number One [Member] | Customer Concentration Risk [Member] | Sales [Member] | Aerospace and Defense [Member]
Concentration Risk [Line Items]
Concentration risk, number of customers		1
Concentration risk, percentage	24.00%	25.00%	22.00%	23.00%