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Product Warranty (Tables)
9 Months Ended
Sep. 30, 2021
Guarantees [Abstract]  
Reconciliation of Reserve for Warranty Expense The following table provides a reconciliation of the activity related to the Company's warranty reserve (in thousands):
Three Months Ended September 30,Nine Months Ended
September 30,
 2021202020212020
Beginning balance$11,533 $9,779 $9,364 $9,636 
Provision1,938 2,137 7,871 5,507 
Claims paid/costs incurred(1,950)(2,276)(5,714)(5,503)
Ending balance$11,521 $9,640 $11,521 $9,640