Income Taxes - Narrative (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Line Items]
Income tax expense	$ 0	$ 2,000
Increase in valuation allowance	14,400,000	$ 28,200,000
Penalties related to income tax matters	0
Accrued interest related to income tax matters	$ 0
Net operating loss, carryback period due to CARES Act	5 years
Federal
Income Tax Disclosure [Line Items]
Operating loss carryforwards	$ 167,500,000
Operating loss carryforwards, carried forward indefinitely	123,400,000
Federal | Research and Development
Income Tax Disclosure [Line Items]
Tax credit carryforwards	5,000,000
State
Income Tax Disclosure [Line Items]
Operating loss carryforwards	72,000,000
Operating loss carryforwards, carried forward indefinitely	16,500,000
State | Research and Development
Income Tax Disclosure [Line Items]
Tax credit carryforwards	$ 2,300,000