Income Taxes (Tables)

9 Months Ended

Sep. 30, 2019

Income Tax Disclosure [Abstract]

Schedule of Components of Income Tax Expense (Benefit)

The provision (benefit) for income taxes consists of the following:

	Three months ended				Nine months ended
	September 30, 2019		September 30, 2018		September 30, 2019		September 30, 2018
	(in thousands)
Current	$	464	$	5,101	$	3,716	$	8,534
Deferred	96		426		4,208		864
	$	560	$	5,527	$	7,924	$	9,398

Schedule of Effective Income Tax Rate Reconciliation

The reconciliation of the Federal statutory income tax rate to the effective income tax rate is as follows:

	Three months ended				Nine months ended
	September 30, 2019		September 30, 2018		September 30, 2019		September 30, 2018
Federal statutory rate	21.0	%	21.0	%	21.0	%	21.0	%
State income taxes, net of Federal benefit	1.3		5.0		4.2		5.9
Amended Oklahoma tax returns	(4.5)		—		(2.0)		—
Excess tax benefits	(1.7)		(2.1)		(3.1)		(3.1)
Return to provision adjustments	(7.1)		4.2		(2.1)		0.5
Other	(5.1)		0.1		(0.6)		(0.5)
Effective tax rate	3.9	%	28.2	%	17.4	%	23.8	%