Income Taxes (Tables)

9 Months Ended

Sep. 30, 2020

Income Tax Disclosure [Abstract]

Schedule of federal tax rate and actual income tax expense reconciliation

The sources and tax effects of the differences are as follows:

	Nine Months Ended September 30,
	2020		2019
U.S. federal statutory tax rate	21.0	%	21.0	%
State income taxes, net of federal tax benefit	1.3		1.5
General business credits	(2.6)		(2.0)
Employee stock-based compensation	(0.7)		(3.7)
IRC 162(m) limitation	4.5		1.9
Nondeductible expenses	0.4		0.2
Other	(0.5)		0.2
Effective tax rate	23.4	%	19.1	%

Schedule of income tax contingencies

The reconciliation of the beginning unrecognized tax benefits balance to the ending balance is as follows:

	Nine Months Ended September 30,
	2020		2019
	(In thousands)
Beginning balance	$	8,398	$	6,965
Increases related to positions taken during prior years	235		—
Increases related to positions taken during the current year	1,200		1,569
Decreases as a result of a lapse of applicable statute of limitations	—		(456)
Ending balance	$	9,833	$	8,078
The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate	$	9,657	$	8,023