MARKET SECTORS AND MAJOR CUSTOMERS - Summary of Sales (Details) - Product Concentration Risk - Sales Revenue, Segment [Member]	3 Months Ended		9 Months Ended
	Jul. 02, 2021	Jun. 26, 2020	Jul. 02, 2021	Jun. 26, 2020
Concentration Risk [Line Items]
Percentage of sales revenue	100.00%	100.00%	100.00%	100.00%
Aerospace & Defense
Concentration Risk [Line Items]
Percentage of sales revenue	76.00%	59.00%	69.00%	60.00%
Medical
Concentration Risk [Line Items]
Percentage of sales revenue	14.00%	28.00%	20.00%	26.00%
Industrial
Concentration Risk [Line Items]
Percentage of sales revenue	10.00%	13.00%	11.00%	14.00%