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Pension and Other Postretirement Benefits - Fair Value Hierarchy - Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 182,511	$ 196,354	$ 189,535
Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	110,608	124,311	68,865
Real estate | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2,811	5,918	8,902
Insurance contract | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	107,797	118,393	59,963
U.S.
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	59,548	60,967	59,591
Foreign
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	122,963	135,387	$ 129,944
Fair Value, Recurring
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	182,511	196,354
Fair Value, Recurring | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	180,476	194,281
Fair Value, Recurring | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,014	1,582
Fair Value, Recurring | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	68,854	68,388
Fair Value, Recurring | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	110,608	124,311
Fair Value, Recurring | Measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2,035	2,073
Fair Value, Recurring | U.S.
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	59,548	60,967
Fair Value, Recurring | U.S. | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	59,548	60,967
Fair Value, Recurring | U.S. | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Recurring | U.S. | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	58,454	56,820
Fair Value, Recurring | U.S. | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,094	4,147
Fair Value, Recurring | U.S. | Pooled separate accounts | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	58,454	56,820
Fair Value, Recurring | U.S. | Pooled separate accounts | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Recurring | U.S. | Pooled separate accounts | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	58,454	56,820
Fair Value, Recurring | U.S. | Pooled separate accounts | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Recurring | U.S. | Real estate | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,094	4,147
Fair Value, Recurring | U.S. | Real estate | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Recurring | U.S. | Real estate | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Recurring | U.S. | Real estate | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,094	4,147
Fair Value, Recurring | Foreign
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	122,963	135,387
Fair Value, Recurring | Foreign | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	120,928	133,314
Fair Value, Recurring | Foreign | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,014	1,582
Fair Value, Recurring | Foreign | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	10,400	11,568
Fair Value, Recurring | Foreign | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	109,514	120,164
Fair Value, Recurring | Foreign | Real estate | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,717	1,771
Fair Value, Recurring | Foreign | Real estate | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Recurring | Foreign | Real estate | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Recurring | Foreign | Real estate | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,717	1,771
Fair Value, Recurring | Foreign | Cash and cash equivalents | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,014	1,582
Fair Value, Recurring | Foreign | Cash and cash equivalents | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,014	1,582
Fair Value, Recurring | Foreign | Cash and cash equivalents | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Recurring | Foreign | Cash and cash equivalents | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Recurring | Foreign | Insurance contract | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	107,797	118,393
Fair Value, Recurring | Foreign | Insurance contract | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Recurring | Foreign | Insurance contract | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Recurring | Foreign | Insurance contract | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	107,797	118,393
Fair Value, Recurring | Foreign | Diversified equity securities - registered investment companies | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2,045	1,892
Fair Value, Recurring | Foreign | Diversified equity securities - registered investment companies | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Recurring | Foreign | Diversified equity securities - registered investment companies | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2,045	1,892
Fair Value, Recurring | Foreign | Diversified equity securities - registered investment companies | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Recurring | Foreign | Fixed income – foreign registered investment companies | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	8,355	9,676
Fair Value, Recurring | Foreign | Fixed income – foreign registered investment companies | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Recurring | Foreign | Fixed income – foreign registered investment companies | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	8,355	9,676
Fair Value, Recurring | Foreign | Fixed income – foreign registered investment companies | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Recurring | Foreign | Commingled funds measured at NAV | Measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 2,035	$ 2,073

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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

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