| Schedule of Product Warranty Liability |
Product warranty activities during the three and nine months ended September 30, 2021 and 2020 were as follows (in thousands): | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Three Months Ended
September 30, | | Nine Months Ended
September 30, | | | | 2021 | | 2020 | | 2021 | | 2020 | | Product warranty liability, beginning of period | | $ | 91,058 | | | $ | 123,194 | | | $ | 95,096 | | | $ | 129,797 | | | Accruals for new warranties issued | | 1,680 | | | 3,435 | | | 8,397 | | | 7,903 | | | Settlements | | (1,091) | | | (9,289) | | | (6,730) | | | (18,772) | | | Changes in estimate of product warranty liability | | (33,106) | | | (19,987) | | | (38,222) | | | (21,575) | | | Product warranty liability, end of period | | $ | 58,541 | | | $ | 97,353 | | | $ | 58,541 | | | $ | 97,353 | | | Current portion of warranty liability | | $ | 16,752 | | | $ | 22,325 | | | $ | 16,752 | | | $ | 22,325 | | | Noncurrent portion of warranty liability | | $ | 41,789 | | | $ | 75,028 | | | $ | 41,789 | | | $ | 75,028 | |
|