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MARKET SECTORS AND MAJOR CUSTOMERS (Tables)
12 Months Ended
Sep. 30, 2020
Risks and Uncertainties [Abstract]  
Schedules of Concentration of Risk, by Risk Factor
A summary of sales, according to the market sector within which IEC’s customers operate, follows: 
Years Ended
Percent of Sales by SectorSeptember 30,
2020
September 30,
2019
Aerospace and Defense60%60%
Medical26%22%
Industrial14%18%
100%100%