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MARKET SECTORS AND MAJOR CUSTOMERS
12 Months Ended
Sep. 30, 2020
Risks and Uncertainties [Abstract]  
MARKET SECTORS AND MAJOR CUSTOMERS
NOTE 10—MARKET SECTORS AND MAJOR CUSTOMERS
 
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%

Three individual customers represented 10% or more of sales for the fiscal year ended September 30, 2020. Two customers were in the aerospace and defense sector and totaled 27% and 11% of sales, respectively. The third customer was in the medical sector and represented 17% of sales. In the prior fiscal year, one individual customer represented 10% or more of sales, this customer was in the aerospace and defense sector and totaled 23% of sales.

Two individual customers represented 10% or more of receivables and accounted for 30% of outstanding balances at September 30, 2020. At September 30, 2019, two individual customers represented 10% or more of receivables and accounted for 38% of such outstanding balances.
 
Credit risk associated with individual customers is periodically evaluated by analyzing the entity’s financial condition and payment history. Customers generally are not required to post collateral.