Income Taxes (Tables)

12 Months Ended

Dec. 31, 2021

Income Tax Disclosure [Abstract]

Schedule of Consolidated Income (loss) From Continuing Operations Before Income Taxes By Location

The “Income before income tax expense” line item in the consolidated statements of operations consisted of:

(Dollars in thousands)	2021		2020		43465
Domestic	$	34,435	$	(4,371)	$	(18,711)
International	91,845		72,905		73,837
Total	$	126,280	$	68,534	$	55,126

Schedule of Income Tax Expense (benefit) By Location

The “Income tax expense” line item in the consolidated statements of operations consisted of:

(Dollars in thousands)	Current		Deferred		Total
2021
Domestic	$	5,155	$	(2,938)	$	2,217
International	16,187		(257)		15,930
Total	$	21,342	$	(3,195)	$	18,147
2020
Domestic	$	5,340	$	(11,012)	$	(5,672)
International	26,610		(2,394)		24,216
Total	$	31,950	$	(13,406)	$	18,544
2019
Domestic	$	3,372	$	(16,827)	$	(13,455)
International	21,984		(722)		21,262
Total	$	25,356	$	(17,549)	$	7,807

Schedule of Deferred Tax Assets and Liabilities

Deferred tax assets and liabilities as of December 31, 2021 and 2020, were comprised of the following:

(Dollars in thousands)	2021		2020
Deferred tax assets
Accrued employee benefits and compensation	$	10,647	$	6,199
Net operating loss carryforwards	3,785		2,563
Tax credit carryforwards	13,170		15,081
Reserves and accruals	5,145		6,581
Operating leases	4,191		665
Capitalized research and development	16,622		14,167
Other	5,299		1,824
Total deferred tax assets	58,859		47,080
Less deferred tax asset valuation allowance	(9,775)		(9,250)
Total deferred tax assets, net of valuation allowance	49,084		37,830
Deferred tax liabilities
Depreciation and amortization	32,669		10,282
Postretirement benefit obligations	2,071		2,001
Unremitted earnings	2,335		2,426
Operating leases	4,422		714
Other	4,367		2,115
Total deferred tax liabilities	45,864		17,538
Net deferred tax asset (liability)	$	3,220	$	20,292

Schedule of Effective Income Tax Rate Reconciliation

Income tax expense differs from the amount computed by applying the U.S. federal statutory income tax rate to income before income taxes. The reasons for this difference were as follows:

(Dollars in thousands)	2021		2020		2019
Tax expense at Federal statutory income tax rate	$	26,519	$	14,392	$	11,576
Impact of foreign operations	2,020		1,193		107
Foreign source income, net of tax credits	(4,944)		1,050		(2,248)
State tax, net of federal	175		(313)		(690)
Unrecognized tax benefits	(8,823)		5,800		543
Equity compensation excess tax deductions	262		(791)		(2,902)
General business credits	(867)		(931)		(656)
Distribution related foreign taxes	2,516		2,332		1,240
Executive compensation limitation	1,570		900		589
Valuation allowance change	525		(5,375)		(2,527)
Disproportionate tax effect of pension settlement charges	—		—		2,510
Other	(806)		287		265
Income tax expense (benefit)	$	18,147	$	18,544	$	7,807

Schedule of Reconciliation of Unrecognized Tax Benefits

Unrecognized tax benefits, excluding potential interest and penalties, for the years ended December 31, 2021 and 2020, were as follows:

(Dollars in thousands)	2021		2020
Beginning balance as of January 1	$	15,688	$	10,217
Gross increases - current period tax positions	1,046		5,417
Gross increases - tax positions in prior periods	1,150		46
Gross decreases - tax positions in prior periods	(9,151)		—
Foreign currency exchange	(10)		8
Settlements	(2,140)		—
Ending balance as of December 31	$	6,583	$	15,688