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Income Taxes | 3 Months Ended
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Mar. 31, 2025
Income Taxes [Abstract] |
Income Taxes | (13) Income Taxes: The following is a reconciliation of the provision for income taxes computed at the federal statutory rate to income taxes computed at the effective rates:
|  |  | For the three months ended ‎March 31,
|  |  | 2025 |  | 2024
| Consolidated tax provision at federal statutory rate |  | 21.0 | % |  | 21.0 | %
| State income tax provisions, net of federal |  |  |  |  |  |
| income tax benefit |  | (5.8) |  |  | 12.0 |
| Federal tax refund adjustment |  | - |  |  | 33.2 |
| Tax reserve adjustment |  | (0.3) |  |  | (0.4) |
| Tax Credit |  | 0.5 |  |  | 0.7 |
| Share based payments |  | 2.4 |  |  | - |
| Sec.162(m) - nondeductible Executive Compensation |  | (1.6) |  |  | (2.7) |
| Transaction costs |  | (1.3) |  |  | - |
| All other, net |  | 0.1 |  |  | (0.1) |
| Effective tax rate |  | 15.0 | % |  | 63.7 | %
Frontier considered positive and negative evidence in regard to evaluating certain state deferred tax assets during the first quarter of 2025, including the development of recent years of pre-tax book losses. The state tax rate includes state valuation allowances. On the basis of this evaluation, a valuation allowance of $364 million ($287 million net of federal benefit) was recorded as of March 31, 2025.

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