Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Income Tax Disclosure [Line Items]
Unrecognized tax benefits	$ 0	$ 0
Tax credit carryforwards expiration year	2038
Accrued penalties and provisions for interest	$ 0	0
Total deferred tax assets	$ 101,269	108,634
Cumulative Changes Ownership Interest	50.00%
Maximum [Member]
Income Tax Disclosure [Line Items]
Income Taxes Paid		$ 100
Domestic Tax Jurisdiction [Member]
Income Tax Disclosure [Line Items]
Net operating loss carryforwards	$ 217,400
State and Local Jurisdiction [Member]
Income Tax Disclosure [Line Items]
Net operating loss carryforwards	$ 205,900
Net operating loss carryforwards, expiration year	2040
Research Tax Credit Carryforward [Member]
Income Tax Disclosure [Line Items]
Valuation allowance period increase	$ 8,400
Research Tax Credit Carryforward [Member] | Domestic Tax Jurisdiction [Member]
Income Tax Disclosure [Line Items]
Research and development tax credit carryforwards	6,300
Research Tax Credit Carryforward [Member] | State and Local Jurisdiction [Member]
Income Tax Disclosure [Line Items]
Research and development tax credit carryforwards	$ 2,400