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Product Warranties (Tables)
9 Months Ended
Sep. 30, 2021
Product Warranties Disclosures [Abstract]  
Summary of Changes in Product Warranties Reserve The following table reflects the changes in our Warranty Reserve during the three and nine months ended September 30, 2021 and 2020:
 Three Months Ended September 30,Nine Months Ended September 30,
 2021202020212020
Warranty reserve, beginning of period$127,502 $111,219 $119,638 $108,053 
Provision22,789 20,894 66,878 48,992 
Payments(20,188)(18,564)(56,413)(43,496)
Warranty reserve, end of period$130,103 $113,549 $130,103 $113,549