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Product Warranty Reserves
 6 Months Ended
Jun. 30, 2018
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
 
Six Months Ended
 
June 30,
2018
 
July 1,
2017
 
June 30,
2018
 
July 1,
2017
 
 
 
(As Adjusted)
 
 
 
(As Adjusted)
Product warranty reserve at beginning of period
$
1,248

 
$
1,357

 
$
1,356

 
$
1,439

Warranty liabilities accrued
623

 
491

 
1,236

 
895

Warranty liabilities settled
(626
)
 
(490
)
 
(1,318
)
 
(906
)
Changes for pre-existing warranty liabilities
(2
)
 
59

 
(31
)
 
(11
)
Product warranty reserve at end of period
$
1,243

 
$
1,417

 
$
1,243

 
$
1,417