Income Taxes (Tables)

3 Months Ended

Mar. 31, 2023

Income Tax Disclosure [Abstract]

Components of Provision for Income Taxes and Income before Provision for Income Taxes

The provision for income taxes differs from the amount computed by applying the U.S. federal statutory rate to income before provision for income taxes and consisted of the following (dollars in thousands):

	Three Months Ended March 31,
	2023				2022
	Amount		Rate		Amount		Rate
Income tax (benefit) expense at the federal statutory rate	$	(2,408)	21.0	%	$	9,353	21.0	%
State income tax (benefit) expense, net of federal benefit	(739)		6.4	%	2,033		4.6	%
(Windfall) shortfall tax benefits, net related to stock-based compensation	654		(5.7)	%	(306)		(0.7)	%
Change in valuation allowance	227		(2.0)	%	(104)		(0.2)	%
Permanent and other items (1)	(3,367)		29.4	%	781		1.7	%
	$	(5,633)	49.1	%	$	11,757	26.4	%

(1) Permanent items relate principally to compensation charges, qualified transportation fringe benefits, meals and entertainment, and other items principally related to the effect of providing taxes in the interim financial statements based on the estimated full year effective tax rate.