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Stock-Based Compensation - Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Stock-based compensation
Stock-based compensation expense	$ 11.9	$ 9.6	$ 10.3
Related income tax benefit of stock-based compensation	$ 2.5	$ 2.3	$ 2.5
Employee stock-based compensation plan
Stock-based compensation
Total shares authorized	5,600,000
Shares available for future grants	1,800,000
Non-employee director plan
Stock-based compensation
Total shares authorized	268,941
Shares available for future grants	101,720

X

- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
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Amount of tax benefit for recognition of expense of award under share-based payment arrangement.

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Number of shares authorized for issuance under share-based payment arrangement.

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