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Product Warranty Reserves
 9 Months Ended
Sep. 28, 2019
Product Warranties Disclosures [Abstract]  
Product Warranty Reserves
PRODUCT WARRANTY RESERVES

The Company generally provides product warranties related to manufacturing defects and specific performance standards for its products. Product warranty reserves are included in accrued expenses in the Company's Consolidated Condensed Balance Sheets. The following is a summary of the Company's product warranty activity:
 
Three Months Ended
 
 
Nine Months Ended
 
September 28,
2019
 
September 29,
2018
 
 
September 28,
2019
 
September 29,
2018
Product warranty reserve at beginning of period
$
1,082

 
$
1,243

 
 
$
1,069

 
$
1,356

Warranty liabilities accrued
260

 
594

 
 
1,403

 
1,765

Warranty liabilities settled
(323
)
 
(579
)
 
 
(1,414
)
 
(1,815
)
Changes for pre-existing warranty liabilities
—

 
(167
)
 
 
(39
)
 
(215
)
Product warranty reserve at end of period
$
1,019

 
$
1,091

 
 
$
1,019

 
$
1,091