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SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS | 12 Months Ended
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Dec. 31, 2020
SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS |
SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS | SCHEDULE II — VALUATION AND QUALIFYING ACCOUNTS ​ Years Ended December 31, 2020, 2019 and 2018 ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ |  | Charged to |  | ​ |  | ​ |  | ​ |
​ | ​ | Balance at | ​ | Costs and | ​ | Charged to | ​ | ​ | ​ | Balance at | ​
​ | ​ | Beginning | ​ | Other | ​ | Other | ​ | ​ | ​ | End of |
​ | ​ | of Period | ​ | Deductions | ​ | Accounts | ​ | Deductions | ​ | Period |
​ | ​ | (In thousands) |
2020 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Allowance for doubtful accounts | ​ | $ | 61,782 |  | 18,929 |  | (329) |  | (10,575) | ​ | $ | 69,807 | ​
Inventory reserve | ​ | $ | 35,048 |  | 5,082 |  | — |  | (16,653) | ​ | $ | 23,477 | ​
Valuation allowance on deferred tax assets | ​ | $ | 2,780,001 |  | — |  | 836,879 |  | — | ​ | $ | 3,616,880 | ​
2019 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Allowance for doubtful accounts | ​ | $ | 41,207 |  | 17,529 |  | (51) |  | 3,097 | ​ | $ | 61,782 | ​
Inventory reserve | ​ | $ | 27,854 |  | 11,808 |  | — |  | (4,614) | ​ | $ | 35,048 | ​
Valuation allowance on deferred tax assets | ​ | $ | 1,917,390 |  | — |  | 862,611 |  | — | ​ | $ | 2,780,001 | ​
2018 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Allowance for doubtful accounts | ​ | $ | 44,376 |  | 3,024 |  | (226) |  | (5,967) | ​ | $ | 41,207 | ​
Inventory reserve | ​ | $ | 28,934 |  | — |  | 14,688 |  | (15,768) | ​ | $ | 27,854 | ​
Valuation allowance on deferred tax assets | ​ | $ | 1,869,490 |  | — |  | 47,900 |  | — | ​ | $ | 1,917,390 | ​
​

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- Definition The entire disclosure for valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Subsection 09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
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- References No definition available. + Details
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