Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Operating Loss Carryforwards [Line Items]
Net loss	$ (55,278,000)	$ (43,513,000)
Deferred tax assets, valuation allowance income tax expense (benefit)	0	0
Income Tax Expense (Benefit)	13,000
Significant change in unrecognized tax benefits is reasonably possible, amount of unrecorded benefit	0
Valuation allowance	40,512,000	54,697,000
Increase in valuation allowance	14,200,000	13,200,000
U.S. federal jurisdiction
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	$ 23,700,000
Operating loss carryforwards limitations on use	offset future income tax liabilities and expire at various dates through 2037
Deferred Tax Assets, Tax Credit Carryforwards, Research	$ 1,400,000	$ 5,200,000
U.S. federal jurisdiction | Minimum
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	88,400,000
U.S. federal jurisdiction | IRC 382
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	67,600,000
Deferred Tax Assets, Tax Credit Carryforwards, Research	5,700,000
State jurisdiction
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	$ 25,500,000
Operating loss carryforwards limitations on use	offset future income tax liabilities and expire at various dates through 204
Deferred Tax Assets, Tax Credit Carryforwards, Research	$ 400,000		$ 2,700,000
State jurisdiction | IRC 382
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	125,800,000
Deferred Tax Assets, Tax Credit Carryforwards, Research	$ 2,800,000