Employee Benefit Plans - Narrative (Detail) - USD ($)	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Minimum amount of employee contributions	$ 6,000	$ 6,000	$ 6,000
Defined contribution plan, employer matching contribution, percent of match	6.00%	6.00%	6.00%
Discretionary contribution amount	$ 0	$ 0	$ 0
U.S. Plan
Defined Benefit Plan Disclosure [Line Items]
Percentage to defer up base compensation of employees, effective from January 1, 2006	25.00%
Amount to defer up bonus compensation of employees, effective from January 1, 2006	$ 500,000
Percentage to defer up eligible bonus compensation, effective from January 1, 2006	25.00%
Amount of compensation deferred in plan	$ 56,800,000	46,100,000
Percentage to Defer Up Cash Component of Director's Fees for Non-employee
Defined Benefit Plan Disclosure [Line Items]
Percentage to defer up directors' fees	100.00%
Non-Employee Directors Voluntary Deferred Compensation Plan
Defined Benefit Plan Disclosure [Line Items]
Amount of compensation deferred in plan	$ 1,500,000	1,200,000
Qualified Plan
Defined Benefit Plan Disclosure [Line Items]
Percentage for employee pre-tax and/or after-tax contributions, minimum	1.00%
Percentage for employee pre-tax and/or after-tax contributions, maximum	50.00%
Defined contribution plan, cost	$ 8,800,000	$ 8,800,000	$ 7,800,000

Deferred compensation plan minimum deferment by participants in condition one, effective from inception date.

No definition available.

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- Definition

Deferred compensation plan percentage of bonus compensation by participants deferred in condition one, effective from inception date.

+ References

No definition available.

+ Details

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- Definition

Defined contribution plan employer matching contribution amount.

+ References

No definition available.

+ Details

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- Definition

Defined contribution plan minimum annual contribution per employee percent.

+ References

No definition available.

+ Details

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- Definition

Participant maximum percentage of base compensation under deferred compensation plan, effective from inception date.

+ References

No definition available.

+ Details

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- Definition

Participant maximum percentage of cash component of directors fees under deferred compensation plan.

+ References

No definition available.

+ Details

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- Definition

The carrying amount of the liability as of the balance sheet date to an individual under a deferred compensation arrangement. This amount may be the result of periodic accruals made over the period of active employment, or reflect termination benefits resulting contractual terms or a death benefit.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 710
-SubTopic 10
-Name Accounting Standards Codification
-Section 30
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483043/710-10-30-1

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- Definition

Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements. Represents currently earned compensation under compensation arrangements that is not actually paid until a later date.

+ References

No definition available.

+ Details

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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.

+ References

No definition available.

+ Details

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- Definition

Amount of cost for defined contribution plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 70
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480794/715-70-50-1

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- Definition

Amount of discretionary contributions made by an employer to a defined contribution plan.

+ References

No definition available.

+ Details

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- Definition

Percentage employer matches of the employee's percentage contribution matched.

+ References

No definition available.

+ Details

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- Definition

Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan.

+ References

No definition available.

+ Details

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