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

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

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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 difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Number of shares used to settle grantee's tax withholding obligation for award under share-based payment arrangement.

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Share-Based Compensation - Additional Information (Detail) - USD ($) shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Compensation expense	$ 3.8	$ 5.8	$ 6.3
Unrecognized expense	$ 3.8
Restricted Stock
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Award vesting period	3 years
Shares surrendered to satisfy tax withholding obligations (in shares)	235
Restricted Stock \| 2020 EIP
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Authorized shares available for issuance (in shares)	2,000