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Retirement Plans - AOCI (Details) - Defined Benefit Pension Plans - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items] |  |
Net unrecognized actuarial (loss) gain at beginning of period | $ (251,629) | $ (264,244)
Amortization of net loss | 10,320 | 10,455
Net gain (loss) arising during the year | (24,939) | 4,939
Currency translation | 9,553 | (2,779)
Net unrecognized actuarial (loss) gain at end of period | $ (256,695) | $ (251,629)

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- Definition Amount, before tax, of accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (j) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI https://asc.fasb.org/extlink&oid=126968391&loc=SL7669686-108580 + Details
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