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Schedule II - Valuation and Qualifying Accounts Allowance for Doubtful Accounts (Tables) | 12 Months Ended
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Dec. 31, 2023
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |
Accounts Receivable, Allowance for Credit Loss |
|  |  | Additions |  |  |  | Deductions |  |  |  |  |  |
| Balance at Beginning of Year |  | Charged to Operations |  |  |  | Written Off |  |  |  |  |  | Balance at End of Year
Allowance for Credit Losses: |  |  |  |  |  |  |  |  |  |  |  |  |
2023 | $ | 19 |  |  | $ | 11 |  |  |  |  | $ | (11) |  |  |  |  |  |  | $ | 19 |
2022 | $ | 17 |  |  | $ | 8 |  |  |  |  | $ | (6) |  |  |  |  |  |  | $ | 19 |
2021 | $ | 17 |  |  | $ | 5 |  |  |  |  | $ | (5) |  |  |  |  |  |  | $ | 17 |
Summary of Valuation Allowance |
|  |  | Additions |  |  |  | Deductions |  |  |  |  |  |
| Balance at Beginning of Year |  | Charged to Operations |  |  |  | Credited to Operations |  |  |  |  |  | Balance at End of Year
Deferred Tax Valuation Allowance: |  |  |  |  |  |  |  |  |  |  |  |  |
2023 | $ | 2 |  |  | $ | — |  |  |  |  | $ | — |  |  |  |  |  |  | $ | 2 |
2022 | $ | — |  |  | $ | 2 |  |  |  |  | $ | — |  |  |  |  |  |  | $ | 2 |
2021 | $ | — |  |  | $ | — |  |  |  |  | $ | — |  |  |  |  |  |  | $ | — |

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- Definition Tabular disclosure of allowance for credit loss on accounts receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-13 + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Tabular disclosure of valuation allowances to reduce deferred tax assets to net realizable value, including identification of the deferred tax asset more likely than not will not be fully realized and the corresponding amount of the valuation allowance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-2 + Details
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