v3.26.3
Stockholder's Equity - Restricted stock and other awards (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2023
Dec. 31, 2022
Stockholder's Equity (Details) [Line Items]            
Remaining shares available for issuance (in shares) 1,088,411   1,088,411      
Granted (in shares)     571,400      
Performance period         3 years 3 years
Total unrecognized compensation cost $ 21.9   $ 21.9      
Weighted average period     4 years 7 months 6 days      
Location, Statement of Income, Balance [Axis]: us-gaap:GeneralAndAdministrativeExpense            
Stockholder's Equity (Details) [Line Items]            
Compensation expense, general and administrative 1.7   $ 5.6      
Compensation expense, operating   $ 0.7   $ 4.2    
Location, Statement of Income, Balance [Axis]: us-gaap:OtherCostAndExpenseOperating            
Stockholder's Equity (Details) [Line Items]            
Compensation expense, general and administrative $ 0.1   $ 0.6      
Compensation expense, operating   $ 0.1   $ 0.6    
RSUs            
Stockholder's Equity (Details) [Line Items]            
Granted (in shares)     82,365     47,005
Employees and Consultants | RSUs            
Stockholder's Equity (Details) [Line Items]            
Issuance and amortization of equity-based compensation, net of forfeitures (in shares)           47,005
Management | RSUs            
Stockholder's Equity (Details) [Line Items]            
Issuance and amortization of equity-based compensation, net of forfeitures (in shares)         64,211  
RSU granted (in shares)         52,154