Stock Award Plans and Stock-Based Compensation - Employee Stock Purchase Plan (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Employee Stock Purchase Plan
Stock-based compensation expense	$ 21.0	$ 18.3	$ 13.4
Employee Stock Purchase Plan
Employee Stock Purchase Plan
Purchase price as a percentage of the market value of a common stock on the day the stock is purchased	85.00%
Offering period over which compensation expense is amortized	6 months
Stock-based compensation expense	$ 0.4	$ 0.4	$ 0.3
Number of shares of common stock originally reserved for future grant	900,000
Number of shares purchased on that date to be issued pending settlement	19,268
Number of shares purchased under the plan	100,000
Employee Stock Purchase Plan | Maximum
Employee Stock Purchase Plan
Payroll deductions as a percentage of employee's salary	10.00%
Number of shares purchased under the plan		100,000	100,000