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Schedule II- Valuation and Qualifying Accounts | 12 Months Ended
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Dec. 31, 2020
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract] |
Schedule II- Valuation and Qualifying Accounts | VALUATION AND QUALIFYING ACCOUNTS (in thousands)
Description | Balance at Beginning of Year |  | Provision (Benefit) for Credit Losses |  | Write-offs, Net of Recoveries |  | Balance at End of Year
Allowance for credit losses: |  |  |  |  |  |  |
2020 | $ | 39,317 |  |  | 64,375 |  |  | (3,363) |  |  | $ | 100,329 |
2019 | $ | 32,694 |  |  | 21,898 |  |  | (15,275) |  |  | $ | 39,317 |
2018 | $ | 30,600 |  |  | 6,527 |  |  | (4,433) |  |  | $ | 32,694 |
Description | Balance at Beginning of Year |  | Additions |  | Deductions |  | Balance at End of Year
Deferred income tax asset valuation allowance: |  |  |  |  |  |  |
2020 | $ | 2,759,431 |  |  | 264,366 |  |  | (37,113) |  |  | $ | 2,986,684 |
2019 | $ | 2,643,899 |  |  | 147,881 |  |  | (32,349) |  |  | $ | 2,759,431 |
2018 | $ | 3,390,467 |  |  | 201,282 |  |  | (947,850) |  |  | $ | 2,643,899 |

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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=26873400&loc=d3e24092-122690 + Details
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- References No definition available. + Details
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