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Employee Benefit Plans - Plan Assets Measured and Reported in Financial Statements at Fair Value (Detail) - Defined benefit pension plans - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 457,132	$ 457,880	$ 431,747
Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	3,650	323
Level 1 | U.S. government and U.S. government agency securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 1 | U.S. corporate debt instruments
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 1 | International corporate debt instruments
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 1 | Mutual funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 1 | Money market funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	3,650	323
Level 1 | Other investments
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 1 | Insurance "buy-in" policy
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	100,385	109,779
Level 2 | U.S. government and U.S. government agency securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,584	14,132
Level 2 | U.S. corporate debt instruments
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	68,070	69,708
Level 2 | International corporate debt instruments
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	23,752	17,490
Level 2 | Mutual funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 2 | Money market funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 2 | Other investments
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	6,979	8,449
Level 2 | Insurance "buy-in" policy
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	30,731	32,794
Level 3 | U.S. government and U.S. government agency securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 3 | U.S. corporate debt instruments
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 3 | International corporate debt instruments
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 3 | Mutual funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 3 | Money market funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 3 | Other investments
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 3 | Insurance "buy-in" policy
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	30,731	32,794
Fair Value, Inputs, Level 1, 2 and 3 | U.S. government and U.S. government agency securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,584	14,132
Fair Value, Inputs, Level 1, 2 and 3 | U.S. corporate debt instruments
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	68,070	69,708
Fair Value, Inputs, Level 1, 2 and 3 | International corporate debt instruments
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	23,752	17,490
Fair Value, Inputs, Level 1, 2 and 3 | Mutual funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	132,165	73,314
Fair Value, Inputs, Level 1, 2 and 3 | Money market funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	3,650	323
Fair Value, Inputs, Level 1, 2 and 3 | Other investments
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	6,979	8,449
Fair Value, Inputs, Level 1, 2 and 3 | Insurance "buy-in" policy
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	30,731	32,794
Fair Value Measured at Net Asset Value Per Share | Collective trust funds, U.S. equity securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	65,256	69,528
Fair Value Measured at Net Asset Value Per Share | Collective trust funds, International equity securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	12,832	66,749
Fair Value Measured at Net Asset Value Per Share | Collective trust funds, Global fixed income
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	48,745	45,862
Fair Value Measured at Net Asset Value Per Share | Collective trust funds, diversified funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	46,407	42,884
Fair Value Measured at Net Asset Value Per Share | Collective trust funds, diversified funds, real estate
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 16,961	$ 16,647

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+ References

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