Income Taxes (Schedule Of Temporary Differences That Give Rise To Deferred Tax Assets (Liabilities)) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Income Taxes [Abstract]
Lease liabilities	$ 39,057	$ 35,936
Accrued liabilities	38,620	42,840
Stock compensation expense	9,102	6,976
Implicit price concessions	7,572	7,744
State net operating loss carryforwards	1,443	1,920
Other	1,330	920
Deferred income tax assets	97,124	96,336
Amortization of intangible assets	(43,205)	(41,925)
Accelerated tax depreciation	(36,519)	(35,416)
Right of use lease assets	(35,514)	(32,489)
Deposit with OAS	(12,769)
Current assets	(5,064)	(3,858)
State income taxes	(2,634)	(2,504)
Market valuation of investments	102	(3,189)
Other	(134)	(138)
Deferred income tax liabilities	(135,737)	(119,519)
Net deferred income tax liabilities	$ (38,613)	$ (23,183)

Deferred Tax Assets, Implicit Price Concessions

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