Employee Benefit Plans - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Defined Contribution Feature
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Compensation expense	$ 4.7	$ 4.0	$ 3.7
Other postretirement benefits
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Discount rate	4.96%	5.16%	2.82%
Voluntary 401(k) Savings Plan
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Pretax income allowed to be deferred (as a percent)	50.00%
Company match (as a percent)	25.00%
Maximum match of employee's salary (as a percent)	7.00%
Compensation expense	$ 1.5	$ 1.2	$ 1.1
Officers and Key Employees | Supplemental Non-Qualified Plans | Other postretirement benefits
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Discount rate	4.89%	5.09%	2.61%
Amount accrued	$ 1.0	$ 0.8