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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2023
Income Taxes [Abstract] |
Schedule Of Provision For Income Taxes |
|  | For the Years Ended December 31,
|  | 2023 |  |  | 2022 |  |  | 2021
Current |  |  |  |  |  |  |  |
U.S. federal | $ | 75,333 |  | $ | 52,910 |  | $ | 64,620
U.S. state and local |  | 9,983 |  |  | 11,813 |  |  | 14,233
Foreign |  | 569 |  |  | 505 |  |  | 511
Deferred |  |  |  |  |  |  |  |
U.S. federal, state and local |  | (8,029) |  |  | 14,821 |  |  | 2,358
Foreign |  | 2 |  |  | 6 |  |  | 42
Total | $ | 77,858 |  | $ | 80,055 |  | $ | 81,764
Schedule Of Temporary Differences That Give Rise To Deferred Tax Assets (Liabilities) |
|  |  | December 31,
|  |  | 2023 |  |  | 2022
| Accrued liabilities | $ | 39,436 |  | $ | 38,620
| Lease liabilities |  | 34,028 |  |  | 39,057
| Stock compensation expense |  | 9,023 |  |  | 9,102
| Implicit price concessions |  | 7,294 |  |  | 7,572
| State net operating loss carryforwards |  | 1,652 |  |  | 1,443
| Other |  | 1,259 |  |  | 1,330
| Deferred income tax assets |  | 92,692 |  |  | 97,124
| Amortization of intangible assets |  | (40,747) |  |  | (43,205)
| Accelerated tax depreciation |  | (32,411) |  |  | (36,519)
| Right of use lease assets |  | (30,891) |  |  | (35,514)
| Deposit with OAS |  | (11,413) |  |  | (12,769)
| Currents assets |  | (4,272) |  |  | (5,064)
| State income taxes |  | (2,552) |  |  | (2,634)
| Market valuation of investments |  | (600) |  |  | 102
| Other |  | (127) |  |  | (134)
| Deferred income tax liabilities |  | (123,013) |  |  | (135,737)
| Net deferred income tax liabilities | $ | (30,321) |  | $ | (38,613)
Schedule Of Significant Changes To Unrecognized Tax Benefits |
|  | 2023 |  |  | 2022 |  |  | 2021
Balance at January 1, | $ | 1,313 |  | $ | 1,379 |  | $ | 1,304
Decrease due to expiration of statute of limitations |  | (355) |  |  | (422) |  |  | (258)
Unrecognized tax benefits due to positions taken in current year |  | 263 |  |  | 356 |  |  | 333
Balance at December 31, | $ | 1,221 |  | $ | 1,313 |  | $ | 1,379
Schedule Of Difference Between Actual Income Tax Provision For Continuing Operations And Income Tax Provision Calculated At Statutory U.S. Federal Tax Rate |
|  | For the Years Ended December 31, |  |
|  | 2023 |  |  | 2022 |  |  | 2021 |  |
Income tax provision calculated using the statutory rate of 21% | $ | 73,577 |  | $ | 69,233 |  | $ | 73,566 |  |
State and local income taxes, less federal income tax effect |  | 2,306 |  |  | 10,207 |  |  | 10,025 |  |
Nondeductible expenses |  | 6,600 |  |  | 6,958 |  |  | 7,443 |  |
Excess stock compensation tax benefits |  | (4,330) |  |  | (5,928) |  |  | (9,884) |  |
Other--net |  | (295) |  |  | (415) |  |  | 614 |  |
Income tax provision | $ | 77,858 |  | $ | 80,055 |  | $ | 81,764 |  |
Effective tax rate |  | 22.2 | % |  | 24.3 | % |  | 23.3 | % |
Schedule Of Income Taxes Paid |
2023 | $ | 73,876
2022 |  | 65,894
2021 |  | 99,430

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