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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2023

Income Tax Disclosure [Abstract]

Reconciliation of Total Amounts of Unrecognized Tax Benefits

The following is a reconciliation of the total amounts of unrecognized tax benefits for the years ended December 31, 2023, 2022 and 2021:

In thousands			2023				2022				2021
Beginning uncertain tax benefits			$	18,715			$	22,040			$	24,034
Prior year—increases				—				—				16
Prior year—decreases				(2,261	)			(9,107	)			(2,248	)
Current year—increases				2,204				5,782				238
Ending uncertain tax benefits			$	18,658			$	18,715			$	22,040

Jurisdictions the Company Remains Subject to Tax Examinations

The Company files income tax returns in the United States, Ireland and United Kingdom, or UK. The Company remains subject to tax examinations in the following jurisdictions as of December 31, 2023:

Jurisdiction		Tax Years
United States—Federal		2018-2023
United States—State		2018-2023
Ireland		2019-2023
United Kingdom		2022-2023

Components of (Loss) Income from Operations Before Taxes

The components of (loss) income from operations before taxes were as follows for the years ended December 31, 2023, 2022 and 2021:

In thousands			2023				2022				2021
United States			$	15,881			$	5,358			$	10,222
Ireland and United Kingdom				(85,177	)			(112,527	)			(4,368	)
Other				15,626				3,364				5,437
Total (loss) / income before taxes			$	(53,670	)		$	(103,805	)		$	11,291

Benefit from Income Taxes

The provision for income taxes shown in the accompanying consolidated statements of operations consists of the following for the years ended December 31, 2023, 2022 and 2021:

In thousands			2023				2022				2021
Current:
United States—Federal			$	1,597			$	562			$	2,690
United States—State				243				573				716
Foreign				3,602				863				156
Total current			$	5,442			$	1,998			$	3,562
Deferred:
United States—Federal				9,927				(3,721	)			5,222
United States—State				(934	)			284				(3,057	)
Foreign				(15,408	)			(1,646	)			(1,619	)
Change in valuation allowance				6,415				5,083				(546	)
Total deferred			$	—			$	—			$	—
Provision for income taxes			$	5,442			$	1,998			$	3,562

Difference between Benefit from Income Taxes and Amount Computed by Applying Statutory Income Tax Rate to Income Before Taxes

The provision for income taxes differs from the amount computed by applying the statutory income tax rate to income before taxes due to the following for the years ended December 31, 2023, 2022 and 2021:

In thousands			2023				2022				2021
Benefits from taxes at statutory rate			$	(13,418	)		$	(25,952	)		$	2,823
Rate differential				8,042				9,141				(4,416	)
Change in valuation reserves				6,415				5,083				(546	)
Nondeductible employee compensation				31				2,344				5,249
Stock option/RSU windfall				4,500				3,569				81
ISO disqualifying disposition windfall				—				—				(219	)
Research and development credits				(376	)			(958	)			(1,170	)
Tax return to provision adjustments				4,187				424				(8,372	)
Foreign exchange				(2,921	)			7,859				4,109
Permanent and other				141				(1,542	)			863
Uncertain tax positions				780				(3,290	)			5,160
Foreign-derived intangible income				(1,939	)			(2,935	)			—
Loss of tax attributes				—				8,255				—
Provision for income taxes			$	5,442			$	1,998			$	3,562

Income Tax Effect of Each Type of Temporary Difference Comprising Net Deferred Tax Asset

The income tax effect of each type of temporary difference comprising the net deferred tax asset as of December 31, 2023 and 2022 is as follows:

In thousands			December 31, 2023				December 31, 2022
Deferred tax assets:
Net operating losses			$	154,086			$	136,862
Stock-based compensation				9,929				11,616
Tax credits				2,409				2,639
Capitalized R&D				—				4,723
Lease liability				1,971				2,583
Other reserves and accrued liabilities				7,916				11,895
Gross deferred tax assets				176,311				170,318
Less: valuation allowance				(171,793	)			(165,378	)
Total deferred tax assets				4,518				4,940
Deferred tax liabilities:
Depreciation and amortization				(3,050	)			(3,337	)
Lease asset				(1,468	)			(1,603	)
Total deferred tax liabilities				(4,518	)			(4,940	)
Net deferred tax assets			$	—			$	—

Valuation Allowance

The following table reflects the activity in the valuation allowance for the years ended December 31, 2023 and 2022:

In thousands		2023				2022
Beginning valuation allowance		$	165,378			$	160,295
Increase as reflected in income tax expense			3,494				12,942
Foreign exchange			2,921				(7,859	)
Ending valuation allowance		$	171,793			$	165,378

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