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WARRANTY RESERVES (Tables)
 9 Months Ended
Jun. 30, 2017
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 Reserve
 
June 30,
2017
 
July 1,
2016
(in thousands)
 
 

 
 

Reserve, beginning of period
 
$
180

 
$
399

Provision
 
100

 
126

Warranty costs
 
(125
)
 
(228
)
Reserve, end of period
 
$
155

 
$
297