Income Taxes (Tables)

12 Months Ended

Dec. 31, 2022

Income Taxes [Abstract]

Schedule of income before income taxes domestic and foreign

	Year Ended December 31,
(in thousands)	2022			2021			2020
Income before taxes:
United States	$	(12,526	)	$	(4,775	)	$	40,323
Foreign	335,121			140,450			(32,152		)
Total income before income taxes	$	322,595		$	135,675		$	8,171

Schedule of components of income tax expense (benefit)

	Year Ended December 31,
(in thousands)	2022			2021			2020
Current tax expense (benefit):
U.S.	$	3,878		$	2,810		$	2,605
Foreign	80,296			59,874			39,270
Total current	84,174			62,684			41,875
Deferred tax expense (benefit):
U.S.	(7,270		)	12,269			(16,100		)
Foreign	14,949			(9,865		)	(14,300		)
Total deferred	7,679			2,404			(30,400		)
Total tax expense	$	91,853		$	65,088		$	11,475

Schedule of effective income tax rate reconciliation

	Year Ended December 31,
(dollar amounts in thousands)	2022			2021			2020
U.S. federal income tax expense at applicable statutory rate	$	67,745		$	28,492		$	1,716
Tax effect of:
State income tax expense at statutory rates, net of U.S. federal income tax	3,666			1,516			347
Non-deductible expenses	1,698			538			1,887
Share-based compensation	1,930			(3,524		)	(6,446		)
Other permanent differences	(219		)	(2,047		)	3,828
Difference between U.S. federal and foreign tax rates	13,859			7,438			7,002
Provision in excess of statutory rates	3,592			2,879			(6,491		)
Change in federal and foreign valuation allowance	(7,704		)	26,673			(4,238		)
Impairment of goodwill and acquired intangibles assets	—			—			22,053
GILTI, net of tax credits	9,807			3,900			—
Tax credits	(697		)	(1,122		)	(3,518		)
Other	(1,824		)	345			(4,665		)
Total income tax expense	$	91,853		$	65,088		$	11,475
Effective tax rate	28.47		%	48.0		%	140.4		%

Schedule of deferred tax assets and liabilities

	As of December 31,
(in thousands)	2022			2021
Deferred tax assets:
Tax loss carryforwards	$	64,889		$	65,862
Share-based compensation	12,620			9,743
Accrued expenses	23,192			19,907
Property and equipment	10,787			11,949
Goodwill and intangible amortization	8,999			9,353
Contract costs	7,034			9,921
Intercompany notes	17,352			6,077
Accrued revenue	5,073			7,541
Tax credits	64,384			65,267
Lease accounting	40,194			42,381
Foreign exchange	2,704			8,283
Other	7,755			14,616
Total deferred tax assets	264,983			270,900
Valuation allowance	(90,369		)	(100,489		)
Total deferred tax assets, net of valuation allowance	174,614			170,411
Deferred tax liabilities:
Intangible assets related to purchase accounting	(12,067		)	(11,763		)
Goodwill and intangible amortization	(31,716		)	(30,339		)
Accrued expenses	(22,661		)	(21,495		)
Intercompany notes	(14,544		)	(10,388		)
Accrued interest	(26,583		)	(34,175		)
Capitalized research and development	(1,229		)	(6,376		)
Property and equipment	(14,630		)	(15,597		)
Accrued revenue	(2,074		)	(2,073		)
Lease accounting	(40,194		)	(42,381		)
Foreign exchange	(9,773		)	(1,211		)
Other	(3,533		)	(3,971		)
Total deferred tax liabilities	(179,004		)	(179,769		)
Net deferred tax liabilities	$	(4,390	)	$	(9,358	)

Summary of operating loss carryforwards

(in thousands)	Gross		Tax Effected
Year ending December 31,
2023	$	2,244	$	516
2024	2,247		503
2025	16,533		3,872
2026	17,655		4,106
2027	4,781		1,151
Thereafter	18,904		4,941
Unlimited	198,253		46,293
Total	$	260,617	$	61,382

Schedule of reconciliation of beginning and ending amount of unrecognized tax benefits

	Year Ended December 31,
(in thousands)	2022			2021
Beginning balance	$	40,990		$	39,785
Additions based on tax positions related to the current year	6,125			3,815
Additions for tax positions of prior years	258			—
Reductions for tax positions of prior years	(3,971		)	(1,998		)
Settlements	(586		)	—
Statute of limitations expiration	—			(612		)
Ending balance	$	42,816		$	40,990

Schedule of income tax examinations

Jurisdictions	Periods
U.S. (Federal)	2014 through 2022
Germany	2016 through 2022
Greece	2013 through 2022
Spain	2015 through 2022
U.K.	2018 through 2022