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Income Taxes (Tables)
12 Months Ended
Dec. 31, 2019
Income Taxes [Abstract]  
Schedule Of Provision For Income Taxes

For the Years Ended December 31,

2019

2018

2017

Current

U.S. federal

$

36,779 

$

23,934 

$

11,724 

U.S. state and local

7,078 

4,484 

4,144 

Foreign

600 

452 

465 

Deferred

U.S. federal, state and local

(2,773)

5,185 

2,402 

Foreign

2 

1 

5 

Total

$

41,686 

$

34,056 

$

18,740 

Schedule Of Temporary Differences That Give Rise To Deferred Tax Assets (Liabilities)

December 31,

2019

2018

Accrued liabilities

$

32,498 

$

30,702 

Lease liabilities

32,476 

-

Stock compensation expense

5,425 

5,894 

Implicit price concessions

4,165 

1,171 

State net operating loss carryforwards

2,678 

2,422 

Other

894 

626 

Deferred income tax assets

78,136 

40,815 

Amortization of intangible assets

(39,679)

(38,346)

Right of use lease assets

(28,807)

-

Accelerated tax depreciation

(21,942)

(19,685)

Currents assets

(2,510)

(1,861)

Market valuation of investments

(2,058)

(1,068)

State income taxes

(1,477)

(1,261)

Other

(167)

(192)

Deferred income tax liabilities

(96,640)

(62,413)

Net deferred income tax liabilities

$

(18,504)

$

(21,598)

Schedule Of Significant Changes To Unrecognized Tax Benefits

2019

2018

2017

Balance at January 1,

$

1,348 

$

1,123 

$

1,069 

Unrecognized tax benefits due to positions taken in current year

234 

453 

268 

Decrease due to expiration of statute of limitations

(259)

(228)

(214)

Balance at December 31,

$

1,323 

$

1,348 

$

1,123 

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,

2019

2018

2017

Income tax provision calculated using the statutory rate of 21%

$

54,938 

$

50,316 

$

40,921 

Stock compensation tax benefits

(24,177)

(22,862)

(18,932)

State and local income taxes, less federal income tax effect

7,880 

7,150 

4,600 

Nondeductible expenses

3,048 

2,280 

1,041 

Enactment of the tax reform act

-

-

(8,305)

Other--net

(3)

(2,828)

(585)

Income tax provision

$

41,686 

$

34,056 

$

18,740 

Effective tax rate

15.9 

%

14.2 

%

16.0 

%

Schedule Of Income Taxes Paid

2019

$

44,063 

2018

9,749 

2017

42,311