| Schedule of Product Warranty Liability |
Product warranty activities during the three and nine months ended September 30, 2015 and 2014 were as follows (in thousands): | | | | | | | | | | | | | | | | | | | | Three Months Ended
September 30, | | Nine Months Ended
September 30, | | | 2015 | | 2014 | | 2015 | | 2014 | Product warranty liability, beginning of period | | $ | 222,304 |
| | $ | 210,827 |
| | $ | 223,057 |
| | $ | 198,041 |
| Accruals for new warranties issued | | 16,700 |
| | 9,832 |
| | 34,948 |
| | 29,343 |
| Settlements | | (4,722 | ) | | (5,057 | ) | | (9,817 | ) | | (12,634 | ) | Changes in estimate of product warranty liability | | (1,212 | ) | | (1,256 | ) | | (15,118 | ) | | (404 | ) | Product warranty liability, end of period | | $ | 233,070 |
| | $ | 214,346 |
| | $ | 233,070 |
| | $ | 214,346 |
| Current portion of warranty liability | | $ | 48,311 |
| | $ | 68,021 |
| | $ | 48,311 |
| | $ | 68,021 |
| Noncurrent portion of warranty liability | | $ | 184,759 |
| | $ | 146,325 |
| | $ | 184,759 |
| | $ | 146,325 |
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