Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Noncurrent deferred tax assets:
Net operating loss carryforwards	$ 51,777	$ 45,472
Contribution carryforwards	26	34
Lease liability	1,671	2,116
Deferred revenue	5,681	20,337
Capitalized R&D costs	31,282	28,732
Other assets	14,845	14,962
Tax credits	33,701	30,757
Less: valuation allowance	(136,872)	(139,133)
Total deferred tax assets, noncurrent	2,111	3,277
Noncurrent deferred tax liability:
Investments and other	577
Deferred gain - Imugene		1,303
Right of use asset	1,534	1,974
Total deferred tax liabilities, noncurrent	$ 2,111	$ 3,277

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Deferred tax liabilities right of use asset

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Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, with jurisdictional netting.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482525/740-10-45-4

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Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences with jurisdictional netting.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(15)(b)(2))
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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible charitable contribution carryforwards.

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-Topic 740
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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from deferred income.

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Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary difference from in-process research and development cost acquired in business combination or from joint venture formation or both.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.

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Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences, classified as other.

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Amount, before allocation of a valuation allowances, of deferred tax assets attributable to deductible tax credit carryforwards including, but not limited to, research, foreign, general business, alternative minimum tax, and other deductible tax credit carryforwards.

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Amount of deferred tax liability attributable to taxable temporary differences from investments (excludes investments in subsidiaries and equity method investments).

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Amount of deferred tax liability attributable to taxable temporary differences from tax deferred revenue or income classified as other.

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