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INCOME TAXES (Tables) | 12 Months Ended
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Dec. 31, 2023
Income Tax Disclosure [Abstract] |
Schedule of Income Tax Expense | Income tax expense consisted of the following (in thousands):
| Years Ended December 31,
| 2023 |  | 2022 |  | 2021
Current: |  |  |  |  |
Federal | $ | 17,624 |  |  | $ | 23,741 |  |  | $ | 42,049 |
State | 7,661 |  |  | 12,423 |  |  | 12,787 |
Foreign | 2,053 |  |  | 489 |  |  | 213 |
| 27,338 |  |  | 36,653 |  |  | 55,049 |
Deferred: |  |  |  |  |
Federal | 10,019 |  |  | 38,521 |  |  | 27,593 |
State | (1,866) |  |  | 4,032 |  |  | 1,895 |
| 8,153 |  |  | 42,553 |  |  | 29,488 |
Total income tax expense | $ | 35,491 |  |  | $ | 79,206 |  |  | $ | 84,537 |
Schedule of Effective Income Tax Rate Reconciliation | The effective income tax rate differs from the federal corporate tax rate of 21% in 2023, 2022, and 2021 as follows (in thousands):
| Years Ended December 31,
| 2023 |  | 2022 |  | 2021
Tax at statutory rate | $ | 31,034 |  |  | $ | 68,205 |  |  | $ | 72,663 |
State income taxes, net of federal tax benefits | 4,578 |  |  | 12,999 |  |  | 11,599 |
Other, net | (121) |  |  | (1,998) |  |  | 275 |
Total income tax expense | $ | 35,491 |  |  | $ | 79,206 |  |  | $ | 84,537 |
Schedule of Deferred Tax Assets and Liabilities | The following table presents our deferred income tax assets and liabilities (in thousands):
| December 31,
| 2023 |  | 2022
Deferred income tax assets: |  |  |
Insurance and claims accruals | $ | 57,168 |  |  | $ | 59,275 |
Compensation-related accruals | 9,931 |  |  | 10,767 |
Allowance for uncollectible accounts | 2,797 |  |  | 3,218 |
Operating lease liabilities | 8,733 |  |  | 10,324 |
Other | 2,235 |  |  | 981 |
Gross deferred income tax assets | 80,864 |  |  | 84,565 |
Deferred income tax liabilities: |  |  |
Property and equipment | 351,352 |  |  | 344,896 |
Investments in equity securities | 12,240 |  |  | 12,818 |
Prepaid expenses | 7,118 |  |  | 7,526 |
Operating lease right-of-use assets | 8,327 |  |  | 10,056 |
Investment in partnership | 18,790 |  |  | 19,745 |
Other | 3,217 |  |  | 2,802 |
Gross deferred income tax liabilities | 401,044 |  |  | 397,843 |
Net deferred income tax liability | $ | 320,180 |  |  | $ | 313,278 |
Schedule of Unrecognized Tax Benefits Roll Forward | The reconciliations of beginning and ending gross balances of unrecognized tax benefits are shown below (in thousands).
| December 31,
| 2023 |  | 2022 |  | 2021
Unrecognized tax benefits, beginning balance | $ | 2,495 |  |  | $ | 2,425 |  |  | $ | 2,363 |
Gross increases – tax positions in prior period | 161 |  |  | 99 |  |  | 65 |
Gross increases – current period tax positions | 120 |  |  | 320 |  |  | 320 |
Settlements | (531) |  |  | (349) |  |  | (323) |
Unrecognized tax benefits, ending balance | $ | 2,245 |  |  | $ | 2,495 |  |  | $ | 2,425 |

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