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WARRANTY OBLIGATIONS | 6 Months Ended
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Jun. 30, 2021
Product Warranties Disclosures [Abstract] |
WARRANTY OBLIGATIONS | WARRANTY OBLIGATIONS The Company’s warranty activities were as follows:
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2021 |  | 2020 |  | 2021 |  | 2020 |  |
| (In thousands)
Warranty obligations, beginning of period | $ | 54,553 |  |  | $ | 37,501 |  |  | $ | 45,913 |  |  | $ | 37,098 |  |  |
Accruals for warranties issued during period | 3,319 |  |  | 766 |  |  | 7,213 |  |  | 2,290 |  |  |
Changes in estimates | 4,269 |  |  | 1,748 |  |  | 11,924 |  |  | 3,425 |  |  |
Settlements | (2,757) |  |  | (2,578) |  |  | (5,687) |  |  | (5,848) |  |  |
Increase due to accretion expense | 1,104 |  |  | 804 |  |  | 2,047 |  |  | 1,578 |  |  |
Other | (550) |  |  | (334) |  |  | (1,472) |  |  | (636) |  |  |
Warranty obligations, end of period | 59,938 |  |  | 37,907 |  |  | 59,938 |  |  | 37,907 |  |  |
Less: current portion | (15,009) |  |  | (10,170) |  |  | (15,009) |  |  | (10,170) |  |  |
Noncurrent | $ | 44,929 |  |  | $ | 27,737 |  |  | $ | 44,929 |  |  | $ | 27,737 |  |  |
Changes in Estimates In the three months ended June 30, 2021, the Company recorded $4.3 million in warranty expense from change in estimates, of which $2.9 million relates to the timing of cost reduction assumptions for replacement products and $1.4 million for continuing analysis of field performance data and diagnostic root-cause failure analysis primarily relating to its prior generation products. In the three months ended June 30, 2020, the Company recorded $1.7 million in warranty expense primarily related to continuing analysis of field performance data and diagnostic root-cause failure analysis primarily relating to its prior generation products. In the six months ended June 30, 2021, the Company recorded $11.9 million in warranty expense from change in estimates, of which $7.7 million relates to continuing analysis of field performance data and diagnostic root-cause failure analysis primarily relating to its prior generation products, $2.9 million relates to the timing of cost reduction assumptions for replacement products and $1.3 million relates to the other cost assumption changes. In the six months ended June 30, 2020, the Company recorded $3.4 million in warranty expense primarily related to continuing analysis of field performance data and diagnostic root-cause failure analysis primarily relating to its prior generation products.

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- Definition The entire disclosure for standard and extended product warranties and other product guarantee contracts, including a tabular reconciliation of the changes in the guarantor's aggregate product warranty liability for the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -URI http://asc.fasb.org/topic&trid=2155896 + Details
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