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Product Warranties Product Warranties - Schedule of Product Warranties Reserves (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Movement in Standard and Extended Product Warranty Accrual, Increase (Decrease) [Roll Forward]        
Warranty reserve, beginning of period $ 107,032 $ 102,852 $ 108,053 $ 103,700
Provision 15,677 16,446 28,098 28,269
Payments (11,490) (18,639) (24,932) (31,310)
Warranty reserve, end of period $ 111,219 $ 100,659 $ 111,219 $ 100,659