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Employee Benefit Plans (Pension Benefit Plan) - Schedule of Cash Equivalents and Investments Held at Fair Value (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 54,490	$ 55,218	$ 48,720
Pension Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	54,490	55,218
Pension Benefit Plan [Member] | Real Estate Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	6,897	6,144
Pension Benefit Plan [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	753	987
Pension Benefit Plan [Member] | Available-For-Sale Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	53,737	54,231
Pension Benefit Plan [Member] | Bond Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	18,058	20,155
Pension Benefit Plan [Member] | Equity Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	21,376	21,525
Pension Benefit Plan [Member] | Other Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	7,406	6,054
Pension Benefit Plan [Member] | Insurance contracts [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		353
Pension Benefit Plan [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	46,629	47,004
Pension Benefit Plan [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Real Estate Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,737	546
Pension Benefit Plan [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	753	987
Pension Benefit Plan [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Available-For-Sale Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	45,876	46,017
Pension Benefit Plan [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Bond Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	16,867	18,840
Pension Benefit Plan [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Equity Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	21,183	21,288
Pension Benefit Plan [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Other Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	6,089	5,343
Pension Benefit Plan [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	4,807	4,942
Pension Benefit Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Real Estate Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2,106	2,326
Pension Benefit Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Available-For-Sale Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	4,807	4,942
Pension Benefit Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Bond Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,191	1,315
Pension Benefit Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Equity Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	193	237
Pension Benefit Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Other Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,317	711
Pension Benefit Plan [Member] | Significant Other Observable Inputs (Level 2) [Member] | Insurance contracts [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		353
Pension Benefit Plan [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	3,054	3,272
Pension Benefit Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Real Estate Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	3,054	3,272
Pension Benefit Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Available-For-Sale Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 3,054	$ 3,272

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+ References

No definition available.

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Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
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