MARKET SECTORS AND MAJOR CUSTOMERS - Summary of Sales (Details) - Sales Revenue, Segment [Member]	3 Months Ended	6 Months Ended
Mar. 27, 2020	Mar. 29, 2019	Mar. 27, 2020	Mar. 29, 2019
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	60.00%	62.00%	61.00%	57.00%
Medical
Concentration Risk [Line Items]
Percentage of sales revenue	24.00%	19.00%	24.00%	23.00%
Industrial
Concentration Risk [Line Items]
Percentage of sales revenue	16.00%	19.00%	15.00%	20.00%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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