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INCOME TAXES (Tables) | 12 Months Ended
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Dec. 31, 2025
Income Tax Disclosure [Abstract] |
Schedule of Components of Income Before Income Taxes | The components of our income (loss) before income taxes for the years ended December 31, 2025, 2024 and 2023 are as follows:
(in thousands) |  | 2025 |  | 2024 |  | 2023
Income (loss) before income taxes: |  |  |  |  |  |
Domestic |  | $ | 13,858 |  |  | $ | (160,709) |  |  | $ | (239,971) |
Foreign |  | 35,734 |  |  | (89,287) |  |  | (122,341) |
Total |  | $ | 49,592 |  |  | $ | (249,996) |  |  | $ | (362,312) |
Schedule of Components of Income Tax Provision | The components of income tax provision for the years ended December 31, 2025, 2024 and 2023 are as follows:
(in thousands) |  | 2025 |  | 2024 |  | 2023
Current: |  |  |  |  |  |
U.S. federal |  | $ | — |  |  | $ | 24 |  |  | $ | 135 |
State |  | 99 |  |  | 301 |  |  | (50) |
Foreign |  | 14,867 |  |  | 2,820 |  |  | 1,686 |
Total |  | $ | 14,966 |  |  | $ | 3,145 |  |  | $ | 1,771 |
Deferred: |  |  |  |  |  |
U.S. federal |  | $ | 838 |  |  | $ | — |  |  | $ | — |
State |  | — |  |  | — |  |  | — |
Foreign |  | (933) |  |  | (952) |  |  | (2,412) |
Total |  | (95) |  |  | (952) |  |  | (2,412) |
Total income tax provision (benefit) |  | $ | 14,871 |  |  | $ | 2,193 |  |  | $ | (641) |
Schedule of Cash Paid For Income Taxes (Net Of Refunds) | Summary of Significant Accounting Policies, cash paid for income taxes (net of refunds) during the year ended December 31, 2025, consisted of the following:
(in thousands) |  | 2025
Federal |  | $ | 799 |
State: |  |
Other (a) |  | 492 |
Total State |  | 492 |
Foreign: |  |
Germany |  | 2,431 |
Korea |  | 1,860 |
Netherlands |  | 1,723 |
China |  | 559 |
Mexico |  | 522 |
Other (a) |  | 1,247 |
Total Foreign |  | 8,342 |
Cash paid for income taxes (net of refunds) |  | $ | 9,633 |
(a) The amount of income taxes paid during the year does not meet the 5% disaggregation threshold and is included in Other.
Schedule of Deferred Tax Assets and Liabilities | The components of our net deferred income tax assets and net deferred income tax (liabilities) at December 31, 2025 and 2024 as follows:
(in thousands) |  | 2025 |  | 2024
Deferred income tax assets: |  |  |  |
Intangible assets |  | $ | 11,860 |  |  | $ | 15,685 |
Stock options and restricted stock awards |  | 1,666 |  |  | 3,032 |
Reserves and allowances |  | 4,511 |  |  | 6,879 |
Net operating loss carryforwards |  | 79,161 |  |  | 59,641 |
Tax credit carryforwards |  | 32,287 |  |  | 31,326 |
Accrued liabilities |  | 2,235 |  |  | 2,681 |
Deferred revenue |  | 1,055 |  |  | 2,176 |
Lease tax assets |  | 12,248 |  |  | 17,498 |
Research expenditures capitalization |  | 31,905 |  |  | 44,773 |
Other |  | 5,607 |  |  | 3,236 |
Valuation allowance |  | (170,425) |  |  | (168,299) |
Total deferred income tax assets |  | $ | 12,110 |  |  | $ | 18,628 |
Deferred income tax liabilities: |  |  |  |
Intangible assets |  | $ | 1,171 |  |  | $ | 2,081 |
Property and equipment |  | 710 |  |  | 2,352 |
Lease tax liabilities |  | 10,182 |  |  | 14,159 |
Other |  | — |  |  | 49 |
Total deferred income tax liabilities |  | $ | 12,063 |  |  | $ | 18,641 |
Net deferred income tax asset (liability) |  | $ | 47 |  |  | $ | (13) |
Schedule of Unrecognized Tax Benefits Roll Forward | We include interest and penalties in the consolidated financial statements as a component of income tax expense.
|  | Unrecognized Tax Benefits(1)
(in thousands) |  | 2025 |  | 2024 |  | 2023
Balance at January 1 |  | $ | (16,413) |  |  | $ | (18,604) |  |  | $ | (17,150) |
Increases related to prior year tax positions |  | (240) |  |  | (1,170) |  |  | (99) |
Decreases related to prior year tax positions |  | 106 |  |  | 4,337 |  |  | 107 |
Decreases related to prior year tax positions as a result of lapse of statute |  | 3,170 |  |  | — |  |  | 271 |
Decreases related to settlement |  | — |  |  | — |  |  | — |
Increases related to current year tax positions |  | (933) |  |  | (976) |  |  | (1,733) |
Increases related to acquired tax positions |  | — |  |  | — |  |  | — |
Decreases related to acquired tax positions |  | — |  |  | — |  |  | — |
Balance at December 31 |  | $ | (14,310) |  |  | $ | (16,413) |  |  | $ | (18,604) |
(1) The unrecognized tax benefit balance as of December 31, 2025, 2024, and 2023 includes $0.5 million, $1.3 million, and $0.3 million 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 Ended |  | Item |  | Balance at beginning of year |  | Additions (reductions) charged to expense |  | Other(1) |  | Balance at end of year
2025 |  | Deferred income tax asset valuation allowance |  | $ | 168,299 |  |  | $ | (1,915) |  |  | $ | 4,041 |  |  | $ | 170,425 |
2024 |  | Deferred income tax asset valuation allowance |  | $ | 125,533 |  |  | $ | 43,365 |  |  | $ | (599) |  |  | $ | 168,299 |
2023 |  | Deferred income tax asset valuation allowance |  | $ | 100,694 |  |  | $ | 23,606 |  |  | $ | 1,233 |  |  | $ | 125,533 |
(1) The Other portion of changes to our valuation allowance consists primarily of the impact of acquisitions and changes in foreign currency translation rates.
Schedule of Effective Tax Rate Reconciliation | The overall effective tax rate differs from the statutory federal tax rate for the years ended December 31, 2025 as follows:
(in thousands) | Amount |  | Percent
Tax provision based on the federal statutory rate | $ | 10,414 |  |  | 21.0 | %
State and local income taxes(1) | 79 |  |  | 0.2 | %
Foreign tax effects |  |  |
Belgium |  |  |
Foreign income tax rate differential | (779) |  |  | (1.6) | %
Changes in valuation allowances | 6,738 |  |  | 13.6 | %
Deferred adjustments | (2,289) |  |  | (4.6) | %
Other | (588) |  |  | (1.2) | %
Germany |  |  |
Changes in valuation allowances | (1,874) |  |  | (3.8) | %
Other | 145 |  |  | 0.3 | %
Netherlands |  |  |
Changes in valuation allowances | 1,623 |  |  | 3.3 | %
Other | (344) |  |  | (0.7) | %
Switzerland |  |  |
Changes in valuation allowances | 1,708 |  |  | 3.4 | %
Tax-deductible goodwill | (1,985) |  |  | (4.0) | %
Other | (409) |  |  | (0.8) | %
Other foreign jurisdictions | 3,924 |  |  | 7.9 | %
Effect of cross-border tax laws |  |  |
Global intangible low-taxed income inclusion | 5,980 |  |  | 12.1 | %
Subpart F income inclusion | 725 |  |  | 1.5 | %
Tax credits |  |  |
Research and development tax credits | (3,593) |  |  | (7.2) | %
Expired foreign tax credits | 3,253 |  |  | 6.6 | %
Changes in valuation allowances | (9,951) |  |  | (20.1) | %
Nontaxable or nondeductible items |  |  |
Employee share-based payments | 2,483 |  |  | 5.0 | %
Equity method investment | (827) |  |  | (1.7) | %
Impairment of investments | 1,338 |  |  | 2.7 | %
Unremitted foreign earnings | 838 |  |  | 1.7 | %
Deferred adjustments | 559 |  |  | 1.1 | %
Payable adjustments | (637) |  |  | (1.3) | %
Other | 791 |  |  | 1.6 | %
Changes in unrecognized tax benefits | (2,451) |  |  | (4.9) | %
Total | $ | 14,871 |  |  | 30.0 | %
(1) In 2025, state taxes in California, New York, New Jersey, New York City, and Michigan made up the majority (greater than 50%) of the tax effect in this category. The overall effective tax rate differs from the statutory federal tax rate for the years ended December 31, 2024, and 2023 are as follows:
|  | % of Pretax (Loss) Income |  |
|  | 2024 |  | 2023 |  |
Tax provision based on the federal statutory rate |  | 21.0 | % |  | 21.0 | % |  |
Increase in valuation allowances |  | (17.3) |  |  | (6.5) |  |  |
Change in carryforward attributes |  | — |  |  | — |  |  |
Global intangible low-taxed income inclusion |  | — |  |  | (0.4) |  |  |
Non-deductible expenses |  | — |  |  | — |  |  |
Non-deductible earnout expense |  | — |  |  | 1.0 |  |  |
Goodwill impairment charge |  | (8.7) |  |  | (14.6) |  |  |
Foreign income tax rate differential |  | 0.2 |  |  | 0.5 |  |  |
Deemed income related to foreign operations |  | (0.6) |  |  | (0.3) |  |  |
Tax rate change |  | (0.1) |  |  | — |  |  |
Employee share-based payments |  | (0.3) |  |  | (0.5) |  |  |
Other |  | (0.3) |  |  | (0.7) |  |  |
Deferred and payable adjustments |  | 1.3 |  |  | (1.3) |  |  |
Non-deductible penalties |  | — |  |  | — |  |  |
State taxes, net of federal benefit, before valuation allowance |  | 1.2 |  |  | 0.7 |  |  |
Return-to-provision adjustments |  | (0.5) |  |  | 0.2 |  |  |
Other tax credits |  | 2.0 |  |  | 1.1 |  |  |
Uncertain tax positions and audit settlements |  | 1.3 |  |  | — |  |  |
Effective tax rate |  | (0.8) | % |  | 0.2 | % |  |

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