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v3.25.1

Income Taxes - Narrative (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2024 | Dec. 31, 2023
Income Taxes [Line Items] |  |  |  |
Foreign earnings repatriated | $ 0 | $ 0 | $ 0 | $ 0
Deferred income taxes recognized | 0 | 0 | 0 | 0
Income tax expense |  |  | $ 0 | $ 0
Effective tax rate |  |  | 0.00% | 0.00%
Statutory tax rate |  |  | 21.00% | 21.00%
Tax losses and credits carried forward | 456,014,000 | 395,590,000 | $ 456,014,000 | $ 395,590,000
Net operating loss carryforwards, subject to expiration | 148,511,000 | 144,588,000 | 148,511,000 | 144,588,000
Net operating loss carryforwards, not subject to expiration | 272,391,000 | 215,891,000 | 272,391,000 | 215,891,000
Deferred tax assets valuation allowance | 205,566,000 | 171,223,000 | 205,566,000 | 171,223,000
Deferred income tax |  |  | 0 | 0
Accrued interest and penalties |  |  | 0 | 0
Domestic | United States |  |  |  |
Income Taxes [Line Items] |  |  |  |
Tax losses and credits carried forward | 376,507,000 | 321,743,000 | 376,507,000 | 321,743,000
State and local |  |  |  |
Income Taxes [Line Items] |  |  |  |
Tax losses and credits carried forward | 34,019,000 | 30,011,000 | 34,019,000 | 30,011,000
Foreign |  |  |  |
Income Taxes [Line Items] |  |  |  |
Tax losses and credits carried forward | 45,456,000 | 43,805,000 | 45,456,000 | 43,805,000
R&D tax credits |  |  |  |
Income Taxes [Line Items] |  |  |  |
Tax credits | $ 35,111,000 | $ 35,147,000 | $ 35,111,000 | $ 35,147,000

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- Definition Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(h)(1)(Note 1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (b) -SubTopic 10 -Topic 740 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-9 + Details
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