Product Warranty (Tables)
 9 Months Ended
Sep. 30, 2016
Guarantees [Abstract]  
Reconciliation of Reserve for Warranty Expense
The following table provides a reconciliation of the activity related to the Company’s reserve for accrued warranty expense (in thousands):
 
Three Months Ended 
 September 30,
 
Nine Months Ended 
 September 30,
 
2016
 
2015
 
2016
 
2015
Beginning balance
$
6,172

 
$
6,447

 
$
5,706

 
$
5,607

Provision
1,163

 
1,052

 
4,403

 
4,321

Claims paid/costs incurred
(1,820
)
 
(1,484
)
 
(4,594
)
 
(3,913
)
Ending balance
$
5,515

 
$
6,015

 
$
5,515

 
$
6,015