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Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Income Tax Disclosure [Abstract]
Accrued expenses	$ 53	$ 75
Stock-based compensation	2,238	2,834
Lease liability	553	631
Other	(2,300)	(798)
Capitalized Sec. 174 R&E	13,202	10,405
Net operating loss carryforwards	48,684	46,437
Research and development credits	6,145	1,044
Total deferred tax assets	68,575	60,628
Valuation allowances	(68,575)	(60,628)
Net deferred tax assets	$ 0	$ 0

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
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-Name Accounting Standards Codification
-Section 50
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-Publisher FASB
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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-Name Accounting Standards Codification
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