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WARRANTY RESERVES (Tables)
9 Months Ended
Jun. 26, 2020
Product Warranties Disclosures [Abstract]  
Schedule of Product Warranty Liability
A summary of additions to and charges against IEC’s warranty reserves during the period follows: 
 Nine Months Ended
Warranty ReserveJune 26,
2020
June 28,
2019
(in thousands)  
Reserve, beginning of period$165  $173  
Provision 65  
Warranty costs(38) (89) 
Reserve, end of period$131  $149