Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Line Items]
Valuation allowance, deferred tax assets	$ 52,291,000	$ 47,413,000
Research and development tax credit carryforwards	29,619,000	33,764,000
Accrued interest	4,184,000	3,474,000	$ 3,246,000	$ 2,297,000
Net interest expense	23,000	17,000	19,000
Potential payment of interest	67,000	52,000
Stock-based compensation	$ 5,709,000	$ 3,940,000
Maximum [Member]
Income Tax Disclosure [Line Items]
Stock-based compensation			$ 55,300,000
Domestic Tax Authority [Member]
Income Tax Disclosure [Line Items]
Federal net operating loss carryforwards expiry, beginning year	2039
Research and development tax credit carryforwards	$ 15,546,000
Net operating loss carryforwards	$ 0
Certain States [Member]
Income Tax Disclosure [Line Items]
Federal net operating loss carryforwards expiry, beginning year	2024
Research and development tax credit carryforwards	$ 21,201,000
State and Local Jurisdiction [Member]
Income Tax Disclosure [Line Items]
Federal net operating loss carryforwards expiry, beginning year	2030
Net operating loss carryforwards	$ 41,000