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Commitments, Contingencies, and Taxes - Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Deferred tax assets: |  |
Accrued liabilities not currently deductible | $ 357 | $ 559
Intangible assets- excess of financial statement over tax amortization | 3,276 | 2,096
Stock-based compensation | 941 | 741
Federal net operating and capital losses | 42,283 | 42,774
Research & experimental tax and other credit carryforwards | 6,198 | 5,612
Lease liability | 307 | 416
Capitalized research and development | 2,170 | 1,764
Other | 274 | 337
Gross deferred tax assets | 55,806 | 54,299
Valuation allowance | (54,597) | (54,105)
Net deferred tax assets | 1,209 | 194
Deferred tax liabilities: |  |
Fixed assets | (295) |
Intangible assets-excess of tax over financial statement amortization | (1,433) |
Right-of-use lease asset |  | (404)
Other | (60) | (39)
Net deferred tax liabilities | $ (579) | $ (249)

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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-2 + Details
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