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Product Warranty (Tables)
9 Months Ended
Sep. 30, 2018
Guarantees [Abstract]  
Reconciliation of Reserve for Warranty Expense
The following table provides a reconciliation of the activity related to the Company’s reserve for warranty expense (in thousands):
 
Three Months Ended September 30,
 
Nine Months Ended
September 30,
 
2018
 
2017
 
2018
 
2017
Beginning balance
$
8,035

 
$
5,969

 
$
6,657

 
$
5,395

Provision
3,110

 
4,371

 
8,633

 
8,495

Claims paid/costs incurred
(2,613
)
 
(2,790
)
 
(6,758
)
 
(6,340
)
Ending balance
$
8,532

 
$
7,550

 
$
8,532

 
$
7,550