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Income Taxes (Schedule Of Temporary Differences That Give Rise To Deferred Tax Assets (Liabilities)) (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
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Income Taxes [Abstract] |  |
Accrued liabilities | $ 42,411 | $ 39,436
Lease liabilities | 33,982 | 34,028
Stock compensation expense | 11,229 | 9,023
Implicit price concessions | 8,115 | 7,294
State net operating loss carryforwards | 1,839 | 1,652
Other | 1,214 | 1,259
Deferred income tax assets | 98,790 | 92,692
Amortization of intangible assets | (42,754) | (40,747)
Accelerated tax depreciation | (29,814) | (32,411)
Right of use lease assets | (30,679) | (30,891)
Deposit with OAS | (11,413) | (11,413)
Current assets | (4,244) | (4,272)
State income taxes | (2,042) | (2,552)
Market valuation of investments | (3,661) | (600)
Other | (128) | (127)
Deferred income tax liabilities | (124,735) | (123,013)
Net deferred income tax liabilities | $ (25,945) | $ (30,321)

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