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Summary of Significant Accounting Policies - Additional Information (Details)
 3 Months Ended 12 Months Ended
Dec. 31, 2022
USD ($)
lease
financialInstitution
Dec. 31, 2022
USD ($)
lease
financialInstitution
Dec. 31, 2021
USD ($)
Property, Plant and Equipment [Line Items]      
Cash and cash equivalents $ 106,745,000 $ 106,745,000 $ 86,863,000
Number of financial institutions used for cash deposits | financialInstitution 2 2  
Depreciation and amortization expense   $ 77,000 85,000
Impairment losses   0 0
Goodwill impairment $ 33,000,000 $ 32,970,000 0
Government assistance rate   43.50%  
Government assistance, amount   $ 2,300,000 $ 1,700,000
Government Assistance, Statement of Income or Comprehensive Income [Extensible Enumeration]   Nonoperating Income (Expense) Nonoperating Income (Expense)
Number of existing operating leases | lease 2 2  
Minimum      
Property, Plant and Equipment [Line Items]      
Estimated useful life (in years)   3 years  
Lease term (in months) 12 months 12 months  
Maximum      
Property, Plant and Equipment [Line Items]      
Estimated useful life (in years)   13 years  
Lease term (in months) 60 months 60 months  
United States      
Property, Plant and Equipment [Line Items]      
Cash and cash equivalents $ 85,700,000 $ 85,700,000  
United States | Money market funds      
Property, Plant and Equipment [Line Items]      
Investment interest rate 4.30% 4.30%  
Australia and Germany | Minimum      
Property, Plant and Equipment [Line Items]      
Investment interest rate 0.00% 0.00%  
Australia and Germany | Maximum      
Property, Plant and Equipment [Line Items]      
Investment interest rate 0.87% 0.87%  
Germany      
Property, Plant and Equipment [Line Items]      
Cash and cash equivalents $ 19,100,000 $ 19,100,000  
Germany | Minimum | Time Deposits      
Property, Plant and Equipment [Line Items]      
Investment interest rate 0.61% 0.61%  
Earning interest at a rate maturity (in months)   3 months  
Germany | Maximum | Time Deposits      
Property, Plant and Equipment [Line Items]      
Investment interest rate 0.87% 0.87%  
Earning interest at a rate maturity (in months)   4 months  
Australia      
Property, Plant and Equipment [Line Items]      
Cash and cash equivalents $ 1,900,000 $ 1,900,000