Income Taxes (Tables)

12 Months Ended

Dec. 31, 2023

Income Tax Disclosure [Abstract]

Schedule of Components of Income Tax Expense

	Years Ended December 31,
	2023		2022		2021
	(in thousands)
Income from continuing operations before taxes:
United States operations	$	86,805	$	97,900	$	188,650
Foreign operations	198,951		219,493		38,130
Income from continuing operations before taxes	$	285,756	$	317,393	$	226,780
Income tax expense (benefit):
Currently payable
United States federal	$	34,091	$	34,310	$	1,649
United States state and local	3,900		4,801		2,453
Foreign	18,166		6,677		15,984
	56,157		45,788		20,086
Deferred
United States federal	(7,497)		(446)		16,354
United States state and local	(623)		(50)		5,988
Foreign	(4,837)		4,353		(14,489)
	(12,957)		3,857		7,853
Income tax expense	$	43,200	$	49,645	$	27,939

Schedule of Effective Income Tax Rate Reconciliation from Continuing Operations

	Years Ended December 31,
	2023	2022	2021
Effective income tax rate reconciliation from continuing operations:
United States federal statutory rate	21.0%	21.0%	21.0%
State and local income taxes	0.8%	1.2%	3.4%
Impact of change in tax contingencies	0.3%	0.1%	(0.7)%
Foreign income tax rate differences	(10.5)%	(10.9)%	0.7%
Impact of change in deferred tax asset valuation allowance	0.5%	(2.5)%	(19.1)%
Domestic permanent differences and tax credits	2.9%	6.3%	6.0%
Impact of share-based compensation	0.1%	0.4%	1.0%
	15.1%	15.6%	12.3%

Schedule of Components of Deferred Income Tax Balances

The components of deferred income taxes were as follows:

	December 31,
	2023		2022
	(In thousands)
Components of deferred income tax balances:
Deferred income tax liabilities:
Plant, equipment, and intangibles	$	(98,112)	$	(94,189)
Right of use asset	(21,440)		(19,853)
	(119,552)		(114,042)
Deferred income tax assets:
Postretirement, pensions, and stock compensation	17,052		17,368
Reserves and accruals	41,474		25,519
Net operating loss, capital loss, and tax credit carryforwards	114,896		149,607
Lease liability	22,073		19,938
Valuation allowances	(109,676)		(142,330)
	85,819		70,102
Net deferred income tax liability	$	(33,733)	$	(43,940)

Schedule of Net Operating Loss Carryforwards

The following tables summarize our net operating loss carryforwards and tax credit carryforwards as of December 31, 2023 by jurisdiction:

	Net Operating Loss Carryforwards
	(In thousands)
United States - Federal and various states	$	44,066
Germany	19,418
United Kingdom	13,641
Other	8,290
Australia	8,234
Total	$	93,649

Schedule of Tax Credit Carryforwards

	Tax Credit Carryforwards
	(In thousands)
United States	$	4,705
Belgium	1,509
Total	$	6,214

Schedule of Reconciliation of Beginning and Ending Amounts of Unrecognized Tax Benefits

A reconciliation of the beginning and ending amounts of unrecognized tax benefits is as follows:

	2023		2022
	(In thousands)
Balance at beginning of year	$	6,180	$	5,821
Additions for tax positions of prior years	605		—
Additions based on tax positions related to the current year	358		359
Balance at end of year	$	7,143	$	6,180