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Income Taxes (Tables)
12 Months Ended
Dec. 31, 2023
Income Tax Disclosure [Abstract]  
Schedule of Components of Income Before Income Taxes
The components of our income before income taxes for the years ended December 31, 2023, 2022 and 2021 are as follows:
Year Ended December 31,
(in thousands)202320222021
Income (loss) before income taxes:
Domestic$(239,971)$(110,610)$308,514 
Foreign(122,341)(10,199)11,026 
Total$(362,312)$(120,809)$319,540 
Schedule of Components of Income Tax Provision
The components of income tax provision for the years ended December 31, 2023, 2022 and 2021 are as follows:

(in thousands)202320222021
Current:
U.S. federal$135 $119 $(8,675)
State(50)(498)2,097 
Foreign1,686 5,037 6,861 
Total1,771 4,658 283 
Deferred:
U.S. federal— — — 
State— — — 
Foreign(2,412)(2,518)(2,795)
Total(2,412)(2,518)(2,795)
Total income tax (benefit) provision$(641)$2,140 $(2,512)
Schedule of Effective Tax Rate Reconciliation
The overall effective tax rate differs from the statutory federal tax rate for the years ended December 31, 2023, 2022 and 2021 as follows:
% of Pretax (Loss) Income
202320222021
Tax provision based on the federal statutory rate21.0 %21.0 %21.0 %
Increase in valuation allowances(6.5)(10.7)(10.4)
Change in carryforward attributes— (1.9)(0.7)
Global intangible low-taxed income inclusion(0.4)(0.5)1.2 
Non-deductible expenses— (1.6)1.4 
Non-deductible earnout expense1.0 (2.8)— 
Goodwill impairment charge
(14.6)— — 
Foreign income tax rate differential0.5 (0.3)— 
Deemed income related to foreign operations(0.3)(0.2)— 
Tax rate change— (1.2)(0.7)
Employee share-based payments(0.5)(1.6)(1.3)
Other(0.7)0.4 — 
Deferred and payable adjustments(1.3)(1.7)1.4 
Non-deductible penalties— (2.5)— 
State taxes, net of federal benefit, before valuation allowance0.7 1.4 1.0 
Return-to-provision adjustments0.2 (0.2)(0.1)
Other tax credits1.1 0.8 (0.5)
Uncertain tax positions and audit settlements— (0.2)(3.0)
Divestitures— — (10.1)
Effective tax rate0.2 %(1.8)%(0.8)%
Schedule of Components of Net Deferred Income Tax Assets and Net Deferred Income Tax Liabilities
The components of our net deferred income tax assets and net deferred income tax (liabilities) at December 31, 2023 and 2022 are as follows:

(in thousands)20232022
Deferred income tax assets:
Intangible assets$13,830 $8,601 
Stock options and restricted stock awards5,409 6,091 
Reserves and allowances6,395 6,145 
Net operating loss carryforwards47,875 51,845 
Tax credit carryforwards25,286 19,649 
Accrued liabilities2,371 2,518 
Deferred revenue2,783 5,502 
Lease tax assets15,985 9,589 
Research expenditures capitalization30,601 11,140 
Other1,227 1,180 
Valuation allowance(125,533)(100,694)
Total deferred income tax assets26,229 21,566 
Deferred income tax liabilities:
Intangible assets8,688 9,090 
Property and equipment4,082 4,477 
Lease tax liabilities13,924 7,785 
Other467 807 
Total deferred income tax liabilities27,161 22,159 
Net deferred income tax liabilities
$(932)$(593)
Schedule of Unrecognized Tax Benefits We include interest and penalties in the consolidated financial statements as a component of income tax expense.
Unrecognized Tax Benefits(1)
(in thousands)202320222021
Balance at January 1$(17,150)$(17,261)$(25,902)
Increases related to prior year tax positions(99)(192)(467)
Decreases related to prior year tax positions107 508 8,886 
Decreases related to prior year tax positions as a result of lapse of statute
271 145 371 
Decreases related to settlement— — 1,043 
Increases related to current year tax positions(1,733)(269)(553)
Increases related to acquired tax positions— (119)(639)
Decreases related to acquired tax positions— 38 — 
Balance at December 31$(18,604)$(17,150)$(17,261)
(1) The unrecognized tax benefit balance as of December 31, 2023, 2022, and 2021 includes $323, $283, and $208 of interest and penalty, respectively.
Schedule of Deferred Income Tax Asset Valuation Allowance
The following presents the changes in the balance of our deferred income tax asset valuation allowance:

Year EndedItemBalance at beginning of yearAdditions (reductions) charged to expense
Other(1)
Balance at end of year
2023Deferred income tax asset valuation allowance$100,694 $23,606 $1,233 $125,533 
2022Deferred income tax asset valuation allowance$91,165 $12,848 $(3,319)$100,694 
2021Deferred income tax asset valuation allowance$123,113 $(31,948)$— $91,165 
(1) The Other portion of changes to our valuation allowance consists primarily of the impact of acquisitions and changes in foreign currency translation rates.