Pension and Postretirement Benefits - Amounts Recognized in AOCI (Details) - Domestic Plans - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Pension Plans \| Funded Plans
Amounts recognized in accumulated other comprehensive income
Net actuarial loss (gain)	$ 6,695	$ 6,926
Prior service credit	(480)	(518)
Subtotal	6,215	6,408
Total	6,215	6,408
Pension Plans \| Unfunded Pension Plans
Amounts recognized in accumulated other comprehensive income
Net actuarial loss (gain)	400	261
Subtotal	400	261
Total	400	261
Postretirement Benefit Plans
Amounts recognized in accumulated other comprehensive income
Net actuarial loss (gain)	(764)	(1,088)
Prior service credit	500	613
Subtotal	(264)	(475)
Total	(264)	(475)
US Postretirement and Pension Plan
Amounts recognized in accumulated other comprehensive income
Net actuarial loss (gain)	6,331	6,099
Prior service credit	20	95
Subtotal	6,351	6,194
Total	$ 6,351	$ 6,194

Amount, after tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 14A
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482790/220-10-45-14A

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 10A
-Subparagraph (i-k)
-SubTopic 10
-Topic 220
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482790/220-10-45-10A

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (j)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480506/715-20-50-1

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Amount, before tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

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Amount, before tax, of accumulated other comprehensive (income) loss for cost (credit) of benefit change attributable to participants' prior service from plan amendment or plan initiation of defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

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