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Defined contribution plan (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Defined Contribution Plan Disclosure [Line Items]    
Pre-tax compensation of employees 90.00%  
Percentage of employer discretion contribution 100.00%  
Defined contribution plan, employer matching contribution, percent of match 3.00%  
Defined contribution plan, employer matching contribution, additional percent of employees' gross pay 50.00%  
Defined contribution plan, employer matching contribution, additional percent of match 5.00%  
Employer discretionary contribution amount $ 1.1 $ 0.9
Maximum    
Defined Contribution Plan Disclosure [Line Items]    
Defined contribution plan, employer matching contribution, percent of match 4.00%