Retirement Plans and Other Postretirement Benefits - Expected Amortization Expense (Detail) $ in Thousands	Dec. 31, 2023 USD ($)
Retirement Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization (accretion) of net actuarial loss (gain)	$ 701
Other Post Retirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization (accretion) of net actuarial loss (gain)	$ (113)

Amount included in accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan expected to be recognized in net periodic benefit (cost) credit for fiscal year following most recent annual statement of financial position.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480506/715-20-50-1

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant