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Balance Sheet Details (Tables)
 6 Months Ended
Jun. 30, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Schedule of Other Current Assets and Prepaid Expenses Other Current Assets and Prepaid Expenses consist of (in thousands):
June 30, 2023December 31, 2022
Prepaid clinical and related costs$3,812 $5,608 
VAT receivable1,181 296 
Australian research and development tax incentive2,875 2,361 
Other1,389 1,225 
Total$9,257 $9,490 
Schedule of Accounts Payable and Accrued Expenses Accounts Payable consist of (in thousands):
June 30, 2023December 31, 2022
Clinical costs$4,348 $3,749 
Legal and audit costs128 288 
Other224 244 
Total$4,700 $4,281 
Accrued expenses consist of (in thousands):
June 30, 2023December 31, 2022
Accrued clinical and related costs$11,668 $6,807 
Accrued legal and audit costs123 169 
Accrued compensation716 890 
Accrued other106 120 
Total$12,613 $7,986 
Schedule of Other Current Liabilities Other Current Liabilities consist of (in thousands):
June 30, 2023December 31, 2022
Lease liabilities$671 $571 
Other257 239 
Total$928 $810