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Product Warranties (Tables)
 9 Months Ended
Sep. 30, 2020
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, 2020 and 2019:
 Three Months Ended September 30,Nine Months Ended September 30,
 2020201920202019
Warranty reserve, beginning of period$111,219 $100,659 $108,053 $103,700 
Provision20,894 20,217 48,992 48,486 
Payments(18,564)(17,205)(43,496)(48,515)
Warranty reserve, end of period$113,549 $103,671 $113,549 $103,671