Quarterly report pursuant to Section 13 or 15(d)

Fair value measurements (Details)

v3.23.3
Fair value measurements (Details) - USD ($)
Sep. 30, 2023
Dec. 31, 2022
Marketable securities:    
Available-for-sale securities, Debt Securities, Current, Total $ 71,669,000 $ 96,572,000
Recurring basis    
Marketable securities:    
Available-for-sale securities, Debt Securities, Current, Total 71,669,000  
Recurring basis | Corporate debt securities    
Marketable securities:    
Available-for-sale securities, Debt Securities, Current, Total 8,817,000  
Recurring basis | U.S. Treasury securities    
Cash equivalents:    
Total Cash Equivalents 7,979,000  
Marketable securities:    
Available-for-sale securities, Debt Securities, Current, Total 59,871,000  
Recurring basis | Agency bonds    
Marketable securities:    
Available-for-sale securities, Debt Securities, Current, Total 2,981,000  
Recurring basis | Level 1    
Marketable securities:    
Available-for-sale securities, Debt Securities, Current, Total 8,817,000  
Recurring basis | Level 1 | Corporate debt securities    
Marketable securities:    
Available-for-sale securities, Debt Securities, Current, Total 8,817,000  
Recurring basis | Level 2    
Marketable securities:    
Available-for-sale securities, Debt Securities, Current, Total 62,852,000  
Recurring basis | Level 2 | U.S. Treasury securities    
Cash equivalents:    
Total Cash Equivalents 7,979,000  
Marketable securities:    
Available-for-sale securities, Debt Securities, Current, Total 59,871,000  
Recurring basis | Level 2 | Agency bonds    
Marketable securities:    
Available-for-sale securities, Debt Securities, Current, Total $ 2,981,000