Income Taxes (Tables)

9 Months Ended

Sep. 30, 2020

Income Tax Disclosure [Abstract]

Schedule Of Interest And Penalties

	September 30, 2020		December 31, 2019
Gross liability for unrecognized tax benefits, exclusive of interest and penalties	$	16,348	$	15,356
Interest and penalties on unrecognized benefits	2,212		1,962
Total gross uncertain tax positions	$	18,560	$	17,318
Amount included in Current liabilities	$	3,986	$	4,896
Amount included in Other long-term liabilities	14,574		12,422
	$	18,560	$	17,318

Schedule of Effective Income Tax Rate Reconciliation

The Company's effective income tax rate for the three and nine months ended September 30, 2020 and 2019 differs from the federal income tax statutory rate due to the following:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
Statutory rate	21.0	%	21.0	%	21.0	%	21.0	%
State taxes, net of federal tax benefit	3.3		2.6		3.2		2.6
Foreign tax expense and tax rate differential	(0.2)		(0.3)		(0.1)		(0.2)
Tax benefit from stock option exercises	(0.4)		(2.2)		(1.0)		(1.5)
Expiration of the statute of limitations	(1.3)		(1.2)		(0.5)		(0.4)
Provision-to-return adjustment	(0.4)		(0.6)		(0.1)		(0.2)
Other, net	(0.6)		(0.4)		(0.5)		(0.3)
	21.4	%	18.9	%	22.0	%	21.0	%