Share based compensation arrangement by share based payment award number of maximum payout shares.

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- Definition

Share-based compensation arrangement by share based payment award performance period.

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- Definition

Share-based payment arrangement, additional future compensation expense.

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- Definition

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

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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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- Definition

Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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- Definition

Amount of cost to be recognized for option under share-based payment arrangement.

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- Definition

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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- Definition

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

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Stock-Based Compensation - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Share-Based Payment Arrangement
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense			$ 0.6	$ 0.4
Grants in period (in shares)			18,660	14,635
Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense	$ 1.3	$ 1.5	$ 3.8	$ 4.3
Grants in period (in shares)			126,931
Unrecognized compensation expense related to unvested options	6.9		$ 6.9
Weighted average remaining recognition period of unrecognized stock-based compensation costs			1 year 9 months 18 days
Restricted Stock Units \| Executive Officer
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Grants in period (in shares)			126,931	1,057
Vesting period			3 years	1 year
Restricted Stock Units \| Employees
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Grants in period (in shares)				135,054
Vesting period				3 years
Performance Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense	$ 1.4	$ 0.7	$ 3.7	$ 1.9
Grants in period (in shares)			126,921
Weighted average remaining recognition period of unrecognized stock-based compensation costs			1 year 9 months 18 days
Maximum number of shares of common stock available for awards (in shares)	253,842	258,114	253,842	258,114	97,096
Maximum number of payout shares of common stock available for awards (in shares)	134,536	201,329	134,536	201,329	97,096
Unrecognized stock-based compensation expenses	$ 6.7		$ 6.7
Performance Shares \| Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based payment arrangement, additional future stock-based compensation expenses	$ 4.1	$ 1.7	$ 4.1	$ 1.7
Performance Shares \| Executive Officer
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Grants in period (in shares)			126,921	132,304
Share-based compensation arrangement by share based payment award performance period			3 years