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Income taxes (Additional Information) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Operating Loss Carryforwards [Line Items]    
Net Operating Loss Carryforwards, Limitations on Use Under current law, the Company's federal NOLs generated in taxable years ending after December 31, 2017, may be carried forward indefinitely, but the deductibility of such federal NOLs is limited to 80% of the Company's taxable income annually for tax years beginning after December 31, 2018. Federal NOLs generated in taxable years ending on or prior to December 31, 2017, however, have a 20-year carryforward period, but are not subject to the 80% limitation  
Net Operating Loss Carryforwards Expiration without Limitation $ 280,100  
Tax Credit Carryforward, Amount 22,474 $ 5,477
Valuation Allowance 145,766 36,094
Change in Valuation Allowance Amount $ 109,700  
Explanation of Change in Valuation Allowance the additional operating loss generated by the Company and the combination of deferred tax assets as a result of the Merger  
Unrecognized Tax Benefits $ 0 $ 0
Penalties Charges and Interest Expense $ 0  
Internal Revenue Service (IRS) [Member]    
Operating Loss Carryforwards [Line Items]    
Period of Cumulative Change in Ownership 3 years  
Maximum [Member]    
Operating Loss Carryforwards [Line Items]    
Net Operating Loss Carryforwards, Expiration Year 2037  
Minimum [Member]    
Operating Loss Carryforwards [Line Items]    
Net Operating Loss Carryforwards, Expiration Year 2036  
Minimum [Member] | Internal Revenue Service (IRS) [Member]    
Operating Loss Carryforwards [Line Items]    
Cumulative Change In Ownership Percentage 50.00%  
State [Member]    
Operating Loss Carryforwards [Line Items]    
Net Operating Loss Carryforwards $ 266,300  
State [Member] | Research and Development Tax Credit Carryforward [Member]    
Operating Loss Carryforwards [Line Items]    
Tax Credit Carryforward, Amount $ 8,700  
State [Member] | Maximum [Member]    
Operating Loss Carryforwards [Line Items]    
Net Operating Loss Carryforwards, Expiration Year 2043  
State [Member] | Maximum [Member] | Research and Development Tax Credit Carryforward [Member]    
Operating Loss Carryforwards [Line Items]    
Tax Credit Carryforward, Expiration Year 2038  
State [Member] | Minimum [Member]    
Operating Loss Carryforwards [Line Items]    
Net Operating Loss Carryforwards, Expiration Year 2035  
State [Member] | Minimum [Member] | Research and Development Tax Credit Carryforward [Member]    
Operating Loss Carryforwards [Line Items]    
Tax Credit Carryforward, Expiration Year 2032  
Federal [Member]    
Operating Loss Carryforwards [Line Items]    
Net Operating Loss Carryforwards $ 302,500  
Net Operating Loss Carryforwards Expiration with Limitation 22,400  
Federal [Member] | Research and Development Tax Credit Carryforward [Member]    
Operating Loss Carryforwards [Line Items]    
Tax Credit Carryforward, Amount $ 15,600  
Federal [Member] | Maximum [Member] | Research and Development Tax Credit Carryforward [Member]    
Operating Loss Carryforwards [Line Items]    
Tax Credit Carryforward, Expiration Year 2043  
Federal [Member] | Minimum [Member] | Research and Development Tax Credit Carryforward [Member]    
Operating Loss Carryforwards [Line Items]    
Tax Credit Carryforward, Expiration Year 2036