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Employer Contributions, Participant Contributions and Benefit Payments (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Pension Plans
Defined Contribution Plan Disclosure [Line Items]
Employer Contributions	$ 3,800	$ 4,100	$ 4,665
Benefits Paid	9,724	6,489	6,038
Other Postretirement Benefit Plans, Defined Benefit
Defined Contribution Plan Disclosure [Line Items]
Employer Contributions	12,153	8,903	4,156
Participant Contributions	279	220	240
Benefits Paid	3,503	2,905	2,568
Supplemental Employee Retirement Plans, Defined Benefit
Defined Contribution Plan Disclosure [Line Items]
Employer Contributions	637	637	654
Benefits Paid	$ 637	$ 637	$ 654

X

- Definition

Amount of payment to participant of defined benefit plan which decreases benefit obligation. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services.

+ References

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-Publisher FASB
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-SubTopic 20
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Amount of contributions received by defined benefit plan from participant which increase benefit obligation.

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Amount of contribution received by defined benefit plan from employer which increases plan assets.

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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.

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