Stock-Based Compensation Expense - Narrative (Details) - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2023	Sep. 30, 2022
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted in period (in shares)	401,535	203,606
Compensation cost not yet recognized	$ 22.5
Compensation cost not yet recognized, period of recognition	2 years 3 months 18 days
Stock-Settled Performance-Based Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost not yet recognized	$ 12.3
Compensation cost not yet recognized, period of recognition	2 years
Award vesting period	1 year
Stock-Settled Performance-Based Restricted Stock Units \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock units granted in period (in shares)	286,863	120,710
Cash-Settled Performance-Based Share-Based Awards (Liability Awards)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Target cash incentive	$ 1.3	$ 1.0
Compensation cost not yet recognized	$ 3.6
Compensation cost not yet recognized, period of recognition	2 years
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units granted (in shares)	20,358	30,500
Compensation cost not yet recognized	$ 1.1
Award vesting period	1 year

The annual target cash incentive amount for non-option equity instruments granted to participants.

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- Definition

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Net number of non-option equity instruments granted to participants.

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Net number of share options (or share units) granted during the period.

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