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Income Taxes (Tables)
12 Months Ended
Dec. 31, 2021
Income Taxes [Abstract]  
Schedule Of Provision For Income Taxes For the Years Ended December 31, 2021 2020 2019Current U.S. federal$ 64,620  $ 58,602  $ 36,779 U.S. state and local 14,233  15,950  7,078 Foreign 511  539  600 Deferred U.S. federal, state and local 2,358  1,456  (2,773)Foreign 42  (23) 2 Total$ 81,764  $ 76,524  $ 41,686 
Schedule Of Temporary Differences That Give Rise To Deferred Tax Assets (Liabilities) December 31, 2021 2020 Accrued liabilities$ 42,840  $ 42,151  Lease liabilities 35,936  35,888  Implicit price concessions 7,744  7,031  Stock compensation expense 6,976  4,047  State net operating loss carryforwards 1,920  2,030  Other 920  888  Deferred income tax assets 96,336  92,035  Amortization of intangible assets (41,925) (40,619) Accelerated tax depreciation (35,416) (31,686) Right of use lease assets (32,489) (32,788) Currents assets (3,858) (3,921) Market valuation of investments (3,189) (2,382) State income taxes (2,504) (1,161) Other (138) (142) Deferred income tax liabilities (119,519) (112,699) Net deferred income tax liabilities$ (23,183) $ (20,664)
Schedule Of Significant Changes To Unrecognized Tax Benefits 2021 2020 2019Balance at January 1,$ 1,304  $ 1,323  $ 1,348 Unrecognized tax benefits due to positions taken in current year 333  200  234 Decrease due to expiration of statute of limitations (258) (219) (259)Balance at December 31,$ 1,379  $ 1,304  $ 1,323 
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, 2021 2020 2019 Income tax provision calculated using the statutory rate of 21%$ 73,566  $ 83,158  $ 54,938  Excess stock compensation tax benefits (9,884) (26,089) (24,177) State and local income taxes, less federal income tax effect 10,025  13,855  7,880  Nondeductible expenses 7,443  5,377  3,048  Other--net 614  223  (3) Income tax provision$ 81,764  $ 76,524  $ 41,686  Effective tax rate 23.3 % 19.3 % 15.9 %
Schedule Of Income Taxes Paid 2021$ 99,430 2020 61,517 2019 44,063