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Summary of Significant Accounting Policies - Additional Information (Details) € in Millions	3 Months Ended
	Mar. 31, 2024 USD ($) lease financialInstitution shares	Mar. 31, 2023 USD ($)	Mar. 31, 2024 EUR (€) lease financialInstitution shares	Dec. 31, 2023 USD ($)
Property, Plant and Equipment [Line Items]
Cash and cash equivalents	$ 97,312,000			$ 46,674,000
Number of financial institutions used for cash deposits | financialInstitution	2		2
Depreciation expense	$ 26,000	$ 32,000
Impairment losses	0	0
Australian research and development tax incentive	676,000			$ 670,000
Government assistance, amount	$ 36,000	$ 1,800,000
Government Assistance, Statement of Income or Comprehensive Income [Extensible Enumeration]	Nonoperating Income (Expense)	Nonoperating Income (Expense)
Number of existing operating leases | lease	3		3
Pre-funded stock warrants
Property, Plant and Equipment [Line Items]
Warrant exercised (in shares) | shares	11,193,564		11,193,564
United States
Property, Plant and Equipment [Line Items]
Cash and cash equivalents	$ 73,200,000
Investment interest rate	5.20%		5.20%
United States | Money market funds
Property, Plant and Equipment [Line Items]
Investment interest rate	5.20%		5.20%
Germany
Property, Plant and Equipment [Line Items]
Cash and cash equivalents	$ 22,500,000
Australian research and development tax incentive | €			€ 1
Australia
Property, Plant and Equipment [Line Items]
Cash and cash equivalents	$ 1,600,000
Government R&D assistance rate	43.50%
Maximum
Property, Plant and Equipment [Line Items]
Estimated useful life (in years)	13 years		13 years
Lease term (in months)	60 months		60 months
Maximum | Germany | Money market funds
Property, Plant and Equipment [Line Items]
Investment interest rate	3.75%		3.75%
Minimum
Property, Plant and Equipment [Line Items]
Estimated useful life (in years)	3 years		3 years
Lease term (in months)	12 months		12 months
Minimum | Germany | Money market funds
Property, Plant and Equipment [Line Items]
Investment interest rate	3.50%		3.50%

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