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WARRANTY RESERVES (Tables)
 3 Months Ended
Dec. 28, 2018
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: 
 
 
Three Months Ended
Warranty Reserve
 
December 28,
2018
 
December 29,
2017
(in thousands)
 
 

 
 

Reserve, beginning of period
 
$
173

 
$
153

Provision
 
34

 
84

Warranty costs
 
(32
)
 
(66
)
Reserve, end of period
 
$
175

 
$
171