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Postretirement Benefit Plans - Amounts Recognized in Balance Sheet (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
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Defined Benefit Postretirement Health And Life Coverage |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Accrued benefit liability | $ 271 | $ 297
Director's Retirement Plan |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Accrued benefit liability | 1,306 | 1,299
Scottdale Defined Benefit Pension Plan |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Accrued pension benefit asset | (809) | (917)
Riverview Defined Benefit Plan |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Accrued pension benefit asset | $ (453) | $ (296)

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- Definition Pension and other postretirement defined benefit plans (assets) liabilities current and noncurrent. + References No definition available. + Details
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- Definition 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. + References No definition available. + Details
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- Definition Amount of liability, recognized in statement of financial position, for defined benefit pension and other postretirement plans. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(15)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(15)(a)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480535/715-20-45-3 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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