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Income Taxes - Additional Information (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Operating Loss Carryforwards [Line Items]      
Unrecognized tax benefits that would impact effective tax rate $ 0.0 $ 0.0 $ 0.1
Unrecognized tax benefits, income tax penalties and interest expense 0.0 0.0 0.0
Undistributed earnings of foreign subsidiaries 99.4 108.6 92.6
Deferred tax liability not recognized, amount of unrecognized deferred tax liability, undistributed earnings of foreign subsidiaries 1.5 1.2 1.3
Tax losses and tax credit carryforward, amount 77.0 74.5 75.8
Tax losses and tax credit carryforward, valuation allowance 20.1   17.0
Tax losses and tax credits carryforward, expire Between 2023 and 2033      
Operating Loss Carryforwards [Line Items]      
Tax losses and tax credit carryforward, amount 3.1    
Tax losses and tax credits carryforward, indefinite      
Operating Loss Carryforwards [Line Items]      
Tax losses and tax credit carryforward, amount 73.9    
U.K.      
Operating Loss Carryforwards [Line Items]      
Tax losses and tax credit carryforward, amount 16.4 15.4 16.5
Tax losses and tax credit carryforward, valuation allowance 4.1 3.8 3.9
Non-U.K.      
Operating Loss Carryforwards [Line Items]      
Tax losses and tax credit carryforward, amount 60.6 59.1 59.3
Tax losses and tax credit carryforward, valuation allowance $ 16.0 $ 13.6 $ 13.1