Income Taxes (Tables)

12 Months Ended

Dec. 31, 2021

Income Tax Disclosure [Abstract]

Components of Income Tax Expense

	Years ended December 31,
	2021		2020		2019
	(in thousands)
Income (loss) before taxes:
United States operations	$	60,806	$	(117,819)	$	42,833
Foreign operations	26,856		183,946		109,577
Income before taxes	$	87,662	$	66,127	$	152,410
Income tax expense (benefit):
Currently payable
United States federal	$	4,375	$	273	$	21,893
United States state and local	3,108		91		3,090
Foreign	13,634		11,511		13,859
	21,117		11,875		38,842
Deferred
United States federal	13,204		(1,754)		7,567
United States state and local	5,205		(2,310)		(1,205)
Foreign	(14,321)		3,913		(2,685)
	4,088		(151)		3,677
Income tax expense	$	25,205	$	11,724	$	42,519

Effective Income Tax Rate Reconciliation from Continuing Operations

	Years Ended December 31,
	2021	2020	2019
Effective income tax rate reconciliation from continuing operations:
United States federal statutory rate	21.0%	21.0%	21.0%
State and local income taxes	8.5%	(2.6)%	1.2%
Impact of change in tax contingencies	(1.3)%	2.3%	—%
Foreign income tax rate differences	1.9%	(38.2)%	(8.6)%
Impact of change in deferred tax asset valuation allowance	(49.4)%	2.3%	9.5%
Domestic permanent differences and tax credits	45.6%	33.3%	4.7%
Impact of share-based compensation	2.5%	1.4%	0.1%
Impact of CARES act	—%	(1.8)%	—%
	28.8%	17.7%	27.9%

Components of Deferred Income Tax Balances

The components of deferred income were as follows:

	December 31,
	2021		2020
	(In thousands)
Components of deferred income tax balances:
Deferred income tax liabilities:
Plant, equipment, and intangibles	$	(105,986)	$	(92,271)
Right of use asset	(19,139)		(17,610)
	(125,125)		(109,881)
Deferred income tax assets:
Postretirement, pensions, and stock compensation	32,139		35,394
Reserves and accruals	19,617		24,388
Net operating loss, capital loss, and tax credit carryforwards	94,537		107,028
Lease liability	19,881		18,515
Valuation allowances	(68,719)		(84,308)
	97,455		101,017
Net deferred income tax liability	$	(27,670)	$	(8,864)

Summary of Net Operating Loss Carryforwards

The following tables summarize our net operating losses carryforwards and tax credit carryforwards as of December 31, 2021 by jurisdiction:

	Net Operating Loss Carryforwards
	(In thousands)
Australia	$	10,134
Belgium	5,069
Germany	14,718
Netherlands	3,975
Other	16,547
United Kingdom	11,737
United States - Federal and various states	101,670
Total	$	163,850

Summary of Tax Credit Carryforwards

	Tax Credit Carryforwards
	(In thousands)
Belgium	$	1,088
Canada	663
United States	15,416
Total	$	17,167

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:

	2021		2020
	(In thousands)
Balance at beginning of year	$	8,573	$	6,779
Additions based on tax positions related to the current year	422		548
Additions for tax positions of prior years	168		1,574
Reductions for tax positions of prior years - Settlement	(3,264)		(328)
Reduction for tax positions of prior years - Statute of limitations	(78)		—
Balance at end of year	$	5,821	$	8,573