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Schedule II - Valuation and Qualifying Accounts | 12 Months Ended
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Dec. 31, 2023
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract] |
Schedule II — Valuation and Qualifying Accounts | Schedule II — Valuation and Qualifying Accounts (In thousands)
|  |  |  |  | Additions |  |  |  |
|  | Balance at Beginning of Period |  |  |  | Charged to Costs and Expenses |  | Charged to Other Operating Revenue |  | Deductions |  | Balance at End of Period
Year ended December 31, 2023 |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 1,499 |  |  |  |  | $ | 21 |  |  | $ | — |  |  | $ | 396 |  | 2 | $ | 1,124 |
Allowance for revenue adjustments 1 |  | 1,630 |  |  |  |  | — |  |  | 5,091 |  |  | 5,639 |  | 3 | 1,082 |
Deferred tax valuation allowance |  | 4,648 |  |  |  |  | (4,253) |  |  | — |  |  | — |  |  | 395 |
|  | 7,777 |  |  |  |  | (4,232) |  |  | 5,091 |  |  | 6,035 |  |  | 2,601 |
Year ended December 31, 2022 |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 1,707 |  |  |  |  | $ | (46) |  |  | $ | — |  |  | $ | 162 |  | 2 | $ | 1,499 |
Allowance for revenue adjustments 1 |  | 1,526 |  |  |  |  | — |  |  | 6,426 |  |  | 6,322 |  | 3 | 1,630 |
Deferred tax valuation allowance |  | 4,625 |  |  |  |  | 23 |  |  | — |  |  | — |  |  | 4,648 |
|  | 7,858 |  |  |  |  | (23) |  |  | 6,426 |  |  | 6,484 |  |  | 7,777 |
Year ended December 31, 2021 |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 1,246 |  |  |  |  | $ | 776 |  |  | $ | — |  |  | $ | 315 |  | 2 | $ | 1,707 |
Allowance for revenue adjustments 1 |  | 1,005 |  |  |  |  | — |  |  | 6,339 |  |  | 5,818 |  | 3 | 1,526 |
Deferred tax valuation allowance |  | 395 |  |  |  |  | 4,230 |  |  | — |  |  | — |  |  | 4,625 |
|  | 2,646 |  |  |  |  | 5,006 |  |  | 6,339 |  |  | 6,133 |  |  | 7,858 |
1 Represents an allowance for revenue adjustments resulting from future billing rate changes. 2 Represents uncollectible accounts written off, net of recoveries. 3 Represents adjustments to billed accounts receivable.

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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 -Name Regulation S-X (SX) -Number 210 -Section 12 -Subsection 09 -Publisher SEC Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480678/235-10-S99-4 + Details
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- References No definition available. + Details
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